Mopar 302 head cc. I intend to cc the heads asa get them off my old motor.

Mopar 302 head cc 02-inch My Demon has a warmed up 318. 2 that it wasn't that high) The heads cc is about 68 cc, unmilled 69 318, '302 later model closed chamber, 63 cc unmilled, 72 915 J heads with 2. To really take advantage of these heads on a 318 you need pistons to raise the compression to an appropriate level to support HP levels in the 350 plus range 302 and 308 are the last 3 digits of the casting numbers of the last heads used on LA engines, not Magnums. 98 for Fed Ex ground shipping + $35. This This is the flow numbers on my 302 heads which are 59 cc. Rules state, "stock head, and for the dodges, can not be less than 63 cc. They are pretty cheap off any '91+ LA 318 and no intake milling. Applications include: Click here to search for Mopar cars and parts for sale. The stock compressed head gasket was mic's at . 180/1. One cc , let alone 2 cc's is a big diff in port size, thats like chopping the guide down 3/8 . My question is I just shaved the heads . Mopar Commando LA. It has cleaned up 302 heads and a Crane hydraulic cam 218/228 @ . 010 milled off @ 71cc, 1990 302 heads milled . I do not know when they will Found this youtube channel where he ports the infamous 302/714 heads. 60 valves with 3/8 stems. Intake Port Volume. My question is will the 302 heads work with this stock short block. J heads are the best platform to start porting and doing mods to because the floor is different /better also there are J heads for 340 from the factory, and for 360 from the factory. Ports are not chambers. Unless you perform some port work (Bowl Area) and (General Porting), stay with the Stock 1. The date code of 6 Jan '69 would indicate it was for a Change Level 5 engine (Jan - May '69). I wounderd what you guys thoughts were on This chart is a collection of published flow numbers for different types of cylinder heads. 030 to raise compression a bit, but it still ran fine on regular unleaded 87 octane. Yep 302 heads have the heart shaped hump between the valves like the 273 302 heads have 62-63 cc combustion chambers, about the same as previous heads so they won't change the compression ratio even they they are a heart shaped combustion chamber. It says "Since the 318 had both swirl ports and the heart shaped chamber, some 906 Heads, what cc? Performance Talk Moparchat - Home of MOPAR Lots of the Mopar shops offer this package for around $700-$800. Head. They are 920 318 heads. Thread Tools: Display Modes #1 302 heads $250. They have 1. the Mopar Performance R/T head with 2. Thread Tools: Display Modes #1 12-12-2002, 12:35 AM PLUM CRZY. also the casting No is 308 on the 360 engine. cylinder pressure is a little easier to obtain, you just need the There is a pair of 915 heads on ebay,search under mopar 340 heads. If flat-top as in the original post, your computed 13. They only made so many of them. Do not fill the hole in the plate, just up to it. 195 cc. 500" lift, which is frankly a completely arbitrary way of doing it. Will my hyd. +/- 74ish cc. I ran a best of 12. 28 5. Block deck & heads lightly planed for good seal (less than . Find Cylinder Heads 240cc Intake Runner Volume (cc) and get Trick Flow Makes Serious Horsepower! CNC Street Ported, Assembled, 1. 9 are the only other closed chamber heads. Does anyone know the cc's on the 4448308 small block (360 heads)? Thanks. ps, I had a pair of 915 heads ,2. The 302 318 head has a 57 cc head much smaller puttin 57 cc head on a 80s 360 can rasie the compression around 9-1. Chrysler Small Block Pro Comp Head. 02 intakes P5249574, this is a bare head but with the hardware they will cost less than a grand comlpete. Inactive User : Join Date: Apr 2000 If this is the problem, I can get the heads redone, new seats, 3 angle valve job, mild porting and polishing. the 88 hyd roller has 302 heads, according to chrysler, they are 58-66cc's. 5 cc. 9 magnum pistions, and the CC's of the piston dishes, if any. present day heads: goose: Performance Talk: 7: 11-11-2001 01:43 AM: ported 452 heads vs Indy SR At this point, this mildly reworked 346 "dog" head with a stock 2. The best 318 head, for performance in stock form, (Done this too many times) is the 68-72 ish head, (Cant remember the casting# off hand, 615? Or something. 6 In the Mopar Performance manual it states that 302heads are a 25 hp bolt on over the stock hi guys. They have the smaller 318 ports, but they are closed chamber heads! Typically around 62cc's, but anywhere from 58-65 cc's depending on the casting. Small Block Mopar Engine . I know they are not 302s as We checked multiple chambers with the burette and plexiglass plate and we got 58 cc’s repeatedly. Thread Tools: Display Modes #1 Also @ 190 cc, this is alot of head. There he lists his flow rates before and after on many heads. 010 removed from each). 14 valve. Page 1 of 2: 1: 2 > Thread Tools: Display Modes #1 04-22-2009, 09:27 PM Polara_68. (I have 2 pairs) There is another thread that covers this same topic. 74 exhaust valves the 516 flowed just as well as the later heads on both intake and exhaust. I'm taking it they had the same guy just do a valve job on both sets of heads. Engine block is 68 318 with a 73 front cover and balancer. If you do a quick search using the search feature on the site, you'll find tons of info on the 302 heads. 92/1. Mopar Technical Forums. The amount of fluid that was used from the burette indicates the volume of the chamber. On another note I also talked to a seemingly knowledgable person off line and he also recommended that I could use the 302 heads from a 318. The 894 x is not a swirl head. 02 1. 550" Dual Springs, Big Chrysler, Mopar, Each. 55) Auto 904. The Magnum RT cylinder head The 67-85ish 273/318 heads are open chamber and 85-91 318 (302) heads are closed chamber also and Magnum 5. It's compatible with engines in the 5. Joined Oct 20, 2009 Messages 110 Reaction score 2 I have a set of 302 heads with the chambers cc out to 57, with thin Mopar gaskets on my 360. I have been told that between flow and compression ,flow will give more Look for 302 heads, they have a smaller chamber. In NHRA super stock and stock, the stock head has to be used. Intake Flow. Thread Tools efficient, make more power w/less valve diameter, and they raise the compression when put on a 360 (they have 58 cc chambers). 0053 cut / CC for a closed chamber and . They feature a swirl port design and just the right size valves for your engine. For a torquer 350 ci Chevy build I've got 165cc intake ZZ4 cylinder heads. #2 302 heads $250. The one I pulled from my Swinger: 87 360+. 318 cylinder head upgrade Get a set of 302 heads, they'll help your compression (my opinion they won't flow any better than what you have and they are often cracked) get 360 heads and cut them . 278-283 cfm range at . 6 valves are a nice up grade, cut the chambers to 63 cc's, a thin gasket and you'll be 9+ compression ratio. All the calculators suggest 10:7 raito (with other specs The numbers are cast on the head, in the middle on the bottom under the head. 02's can be installed easy. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout, in addition these are the only AFR heads that are compatible with the OEM piston valve relief. They were available in 85-91 vehicles. But for a small block I prefer Badger pistons along with the SCAT I beam rods. I have a cracked head on the from side near drivers mount. When i cc'd those headsthe open chamber heads were around 68cc the early closed chamber #4323302 Cylinder Heads. Weaps coolant but not getting into oil. any idea what the cc is on these?. If I had to choose from the verity of 318 heads ready to run on a table, it would be 302’s. Being the 318 is a 87 there is a good The 273 heads you have now are most likely 178 heads which have a CC of 64. 38:1 compression ratio. look under "smog pump problems" . you have to go to one of those online compression ratio calculators and you need to get the head gasket volume, the chamber cc's and the bore and stroke (and depth in the hole@ tdc) to get the proper compression ratio. There is an interesting excerpt in "Mopar Engines", page 72, The core shift quality is pretty much even between the two. Mopar had a gasket set that compressed tp . The “302” - 318 head is also fine for stock 318’s. 060 thick,the steel ones are . tax = $493. Well, I had the opportunity to go to a dyno session on a SB 318- the "302" casting heads, with no porting and stock valves and valve springs, were a 25 HP increase over the older 318 casting heads, with the same 4bl manifold and everything else being equal! 85W350 CC, 99 Dakota s, 73 Roadrunner, 78mag gt, 70 dart, 94 jeep , 05 jeep Not much information elsewhere either; there is a pretty decent article in mopar muscle about porting the factory heads. 97 4. Use a piston that can get you some good quench. 100" 66 71 +5 51 80 +29. Heres some Mopar head info. stroker kit from 440 source to combine with these reworked heads along with an Edelbrock rpm dual plane intake, no I just CC's an 86 360 head and it was 74CC and that was with a stock tulip 1. 60" valves in but it wouldn't help unless you port the bowl beneath the valve. 00/pr, 5. It's ups and downs 'mainly downs in stock form' followed by a flow test, valve job 75-60-45-30 angles, cham get some 302 heads with smaller CC's off the bat. 2:1 engine but the rating may be more "true" on the later builds. What you are gaining with 302's are swirl port chambers and hardened exhaust seats. Mopar Compatible Heads Menu Toggle. 46 Calif. The pointy thing in the middle of the chamber is not the only "swirl" part of a 302 head, the main thing is the flow is directed to the outside of the port by bringing in the inner wall of the port. (I have 2 pairs) daniel_depetro: Rear Wheel Drive - Parts for Sale Those 302 head ports are too small for 6,000 plus. The section right after the bit you highlighted says the chambers are similar to the earlier 340/360 heads, which are open chambers. With iron heads it's not a good idea to go over 10:0:1 compression because of pinging witch will kill an engine. 63 cc (65 cc relieved Small Block Mopar Engine . 302's shaved 50 with a steel shim gasket and a 9:5:1 piston will give you a CR of 10:0:1. 50" Its a 78cc head used on 318-360 4bbl motors with hyd roller cams and was later replaced with the 302 and 308 heads. 02 valve head flows no more than the 1. 5:1 static CR is way off; more like 10-10. They come with two fiferent valve lenghts stock around 4. 010 @ 64cc. Any thoughts on this idea? This 100% CNC ported head offers an all new, shallow 15% valve angle. The factory 2. They are swirl port heads and seem to flow better than most others. Thread and NEVER trust the factory "rated" cc's of any head. 67 Mopar 318 heads 750 miles away though. No one has to agree with what I'm saying, it is what Click here to search for Mopar cars and parts for sale. Seats, guides and valves, the edge goes to the RPM. These are not for sale but here is a set of mopar performance smog race head, big intakes, ported and chamber work right out of the box. (I have 2 pairs) daniel_depetro: Rear Wheel Drive - Parts for Sale: 0: 03-05-2008 11:35 AM: Mopar Heads Help 2951250's: Sciaretta_3341: Drag Racing Forum: 1: 10-11-2006 11:09 PM: Hemi heads vs. NHRA lists all this information and it comes from chrysler corp. Have both tested for cracks, and run the best ones. The 302 is a modern, swirl port, high velocity, small chamber head. 02-1. 302 heads on a 360? Thread starter jeremiah2146fa; Start date Sep 1, 2010 - jeremiah2146fa Well-Known Member. 0095 head The w-2 head was designed for oval track racing. 88-1. B1BA. 040 cut can be made to these heads as on other Mopar heads that I have cut to get the cc's down to spec. They have a flow rate of approx 200/210 cfm. 02's and 1. 65cc chambers normally, but up to 72cc's depending on the casting. 2L/5. This was done to improve combustion to get past the epa restraints put on the manufacture so it would pass E tests. I am not sure of the cc difference of the two heads I know the 308's are larger. Mentions 220's cfm with a 1. 3 CC. 030 larger but from ports and cc's this makes a big difference in flow, It is a stock new short block. Thread Tools: Display Modes #1 12-12 -2002, 12:35 AM PLUM swap for swap which head will flow better WITHOUT modifications, a vintage 71-75 #675 318 head or the newer #302 head? I have a set of both heads. Start with RyanJ @ shady dell speed shop. s} and {#675 = 60. Estimated Ship Date: 318 head specs Performance Talk : Moparchat - Home of MOPAR enthusiasts worldwide! > Technical I am planning some 302's in my 318'er and am going to mill the little if any. 2005 Dodge Neon SXT 2003 Dodge 2500 1981 Dodge Mirada 1979 Chrysler 300 1977 Dodge M885 a large cc combustion chamber of the heads. Will these flow better than the x heads that I have now or is there no difference. 7 - 59. Not Yet Reviewed. 60 OEM Stealth CFM OEM Stealth CFM INT INT Change Exh Exh Change. 50 valves with 63 cc chambers. The casting number for your heads can be found under the rocker shaft if you pull them off. Headers would be better than the 340 manifolds; sell them to some one doing a resto, pay for the headers. I am only familiar with the 675, 920, 302 as far as numbers go. New NOS Mopar DODGE PLYMOUTH CHRYSLER 318 V8 Engine CYLINDER HEAD GASKET 4186348 My source shows . Still the only way to know the true chamber volume is to pull the heads and CC all the chambers. 302 casting heads are found on late 80s 318s. 755 combustion height. 97 head. For every . Estimated Ship Date Cylinder Head, High Port 240, Assembled, 67cc CNC Chambers, Ford, 289, 302, 351W, Each. 02 for a 340. The price for the 2 remanufactured 302 heads was $417 (Including $100 for cores) + $39. the typically 60 cc fast burn head at 60 cc’s. (I have 2 pairs) The ports and flow rates were close to the same as the mopar 302 heads, they mentioned the E7s as a comparison, and that they turned 500 hp with the E7s. May be able to score em for $50 each if I pull em. Generally there all a closed chamber. The 69 318 is one of the highest compression engines that Mopar made. 600 valve combination, this head is available in many stages from bare to assembled packages. Thread Tools: Display Modes #1 My book says 452 heads @ 81. I've personally cc'd and documented 1971 915 heads with . 020 compressed. Thread Tools Posts: 1 Hey guys, I'm looking to swap a set of "302" heads onto my otherwise stock 318 2-bbl. When making the move from iron to aluminum, the heat goes out of the chamber faster through aluminum. 025 Replace the valves with thick margin valves to reduce the chamber volume If the motor is stock,and has never be apart,you could remove the crank and have it offset grinded on the rod journals Hey Mopar land I have seen a lot of recent posts about 302 and 308 heads and it has sparked a question for the experts. Forums. 00/pr. 032 and the piston was in the hole . 5:1 cr so your 59 - 60 cc's Click here to search for Mopar cars and parts for sale. More specifically, the compression height of the 5. Springs) Actually, the Some cars left the factory with nail head exhaust valves in 302 heads, others with semi-tulip exhaust valves, which add 0. The shape isn't there. The exhaust port also has a better floor on the 318 swirl port heads are to have the “302” Designation. The are open chamber, but work great. 5 to 68. #302 . The 302's were for 318's. because they were low power. Stock rear is a 2. I planned on grabbing a pair of 302 heads when temps cool down and the rattlesnakes go into hibernation. These heads are NOt high performance heads but just sime dead stock heads. differnt intake valves ans valve springs. 92-1. Who has a factory 302 head 318 that's a bad ***. 7 cc was the spec) with valve diameters of 1. 2:1 motors. couple questions I have are: what can I do to the heads (as far as porting 516 / 915 heads ? Performance Talk Moparchat - Home of MOPAR The 516's have a 1. A bit better than the inbetween heads. 045-. just food for thought. I think 906 heads originaly have a 79. Best bolt on head, is the 302, by far, the older heads, may be great, but todays gas will kill them without seats. • 60 or 55 cc Combustion Chambers • Head Studs: ARP 154-4005 for 289-302, ARP 154-4203 for 351 • Head Bolts: ARP 154-3605 for 289-302; ARP 154-3603 for 351 • Exhaust Gaskets: FEL-PRO 1487, BRODIX MG i would go with the 69 block and measure the piston height just cause it said the early 318 had 9:1 in reality probably had 8:7 or something like that, my 1971 318 was suppose to have 8:6:1 but in stock form really head 7:9:1 so measure how far in the hole, head gasket size the 302 heads are 64cc then you can calculate hot much to mill off to get to where you want, i Cylinder Head, High Port 240, Assembled, 67cc CNC Chambers, Ford, 289, 302, 351W, Each Part Number: TFS-5171T016-C02 Estimated Ship Date: Dec 16, 2024 if ordered today My cylinder head guy says with work on the flow bench he has worked the 452's to 600+ hp. #18 302 heads $250. I'd also recommend an Edelbrock preformer intake (not the rpm version) for your car. I know the chambers are larger on all of these heads compared to the 920s I can cheat some of the cc's with A thinner head gasket using one of the other heads. The port volume increases from 160 to 165 with a 1. The MP thin head gasket is whats going to do my work. In stock form you are comparring the 360 that flow roughly 215cfm w/1. I have a set of 302 casting heads, 262/272 duration and 420/441 lift cam, LD4B 4 bbl intake, 600cfm edelbrock carb, Speed-pro aluminum pistons with 1. here is something bjr was able to achieve useing small valves in a "302 head" on a 318 "Valves are 85-89 302 318 stock valves on the intake side Yes I agree with you it's only . Joined Dec 28, 2011 Messages 124 Reaction score 7 LA Small-Block Mopar Cylinder Head Casting Numbers The casting numbers for small-block Mopar a seven-digit number, which is raised, and usually found in one of two AFR's 165cc "Street" cylinder heads are the preferred choice over re-worked factory heads. Part Number: TFS-61617802-C00. Intake and Exhaust Ports: Precision CNC Porting in our Rottler 5 axis CNC Porting Machine: Service Includes: Precision CNC Porting Customer Supplied Cylinder Head. BUT, if you install a 1. My dads buddy has a few sets but only info I got was they have hardened seats. 040 and your gasket bore According to the Mannel SBF book C90E-E were '69 (only) 302-2V, 9. In order to get the head to perform, they need to be ported, a lot! There is enough meat in the heads ports to do some major reworking, and that’s what’s needed. There is an interesting excerpt in "Mopar Engines", page 72, describing how such a head was ported and made to flow as well or better than other small block cylinder heads. 2L - 318ci - V8 302 castings Performance Talk. 88" Intake Valves will have 'from Zero to Minimal Gain'. I wouldn't get too hung up on that letter at the end. I am considering a 500 in. You won't have to look for shorter pushrods then. 5. Closed chambers will help raise your CR which all 318 could use. 2658234 66 273 closed chamber 2658920 67 273-318 closed chamber 2843675 68-69 273 open chambers The 302 heads will work with a 66 and newer intake and do have hardened seats #4323302 Cylinder Heads Casting Years . The time According to my reference book "How to Hot Rod Small Block Mopars" the heads are 75-76 assembly years with 63 to 69 cc chambers. We've maintained the 1. 76, but that will change. Location: Southwestern PA What is the likelihood of This is what they can do according to Hughes Engines: Stealth-ported" S/B oval track heads '596' casting number OEM valves 1. Picking up a pair of redone 302 heads hoping Home. For another $400, you can get Edelbrocks though. 88/1. just food for thought. 78" intake valve. with steel shim head gaskets that are about . The picture says they haven't. Part Number: SUM-152123 4. anybody here ever see a set of mopar performance 302 swirl port heads. Thread Tools: Display Modes 302 casting heads? otanathesamurai: Performance Talk: 6: 05-05-2004 08:15 PM: 360 heads j casting: autobonn racing: Performance Talk: 3: 03-21-2004 10:14 AM: casting # cc of heads: Taz: Performance Talk: 5: 03-09-2001 03:36 PM: All times are GMT -4. 88 valve heads. Chamber Volume. 65 cc. 78" Intake Valve. 88 that had a 3cc "dish" so if you were to use a stainless valve, you would get about 71cc. 318 swirl port heads Vintage MOPAR chat : Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Forums > Vintage There's nothing really speacial about them other than a cc that makes the mixture swirl. 9L Magnum heads $100. 4, and magnum heads shave . Your bore is 3. Going in a 360 kb107 pistons, 3400-3600 stall 9. 29". Best running 318's I had were 71,74. (I have 2 pairs) The 516's will work but are the doorstops of the big block heads. Runner difference, Combustion Chamber volume etc. You can't find much worse big block heads. Magnum heads are in the 60- to 65-cc range. When equipped with the 1. 75 cc to the chamber volume. the 58cc's is a pipe dream, or a really rare find, because i have built lots of 318's with 302's and have never found one with under 62 (the cc's per chamber also vary by a couple cc's) the piston in the 318/360 Heads Performance Talk : Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Also, if anybody knows, how far down the hole the piston sits along with head chamber cc? #22 02-16-2005, 12:17 AM 302 heads $250. this head installed on a 451, with flat tappet cam, FT piston, 3200# car will run 10. Most are almost always several cc's larger than they are spec'd out to be. 045"} down to 60. comp ratio. Top. Thanks and relative minimum Factory CC Specifications for each Cylinder Head {#920 = 57. 60 valves. Swirl Port heads. 4027593 = 77-84 318 heads with 1. 88" Intakes only. The heads where cut some (I don't remember how much) to obtain the 59 cc. 02. (I have 2 pairs) daniel_depetro: Rear The numbers dont lie. 302 heads $250. Tom I think you'll find the 58 cc is for the regular 302 head not the Boss. Here's a calculator. Flow bench results will vary! The "J" heads as far as I have personally seen come with 1. Heads milled . 5:1 heads of nominally 58 cc (56. 02 valve with the Z Anyone know what the stock combustion chamber cc's are for the so called #302 casting heart chamber heads ? Home. 62-inch valves and 62cc chambers that are roughly 6 to 8 cc's smaller than original LA castings. If you do port read steve dulcich porting articles on mopar muscle magazines website. CNC Ported Heads - Chambers and Ports. 88 int valve due to the back side of 302 heads have 62-63 cc combustion chambers, about the same as previous heads so they won't change the compression ratio even they they are a heart shaped combustion You could also do some general checking around on flow rates as well as expense costs. Chrysler Small Block Cylinder Head Volumes (cc) IN FACT almost EVERYTHING mopar did is lucky to have "308 "head CC size Performance I would imagine that a -. 88 int and 165cc vs 302 heads that flow roughly 170cfm w/1. With the stock Intake Port Volume at {120 CC}, installing larger 1. Having said that I've had a set on my truck, 208/174 valves, home ported and cc'd. Just by going to larger valves without some port work, will have 'minimal gain', and that gain will only Mopar Action did an article on head flow numbers about 3 years ago, they tested the 516 as well as a few open chamber heads. Part Number: VRE-2F94. The intake ports measure 172 cc with 1. With the heads, pistons, and gaskets used, I've calculated a 9. also MP says do you have, or can you obtain, a set of flow numbers for the 302 heads with porting and oversize valves? I have been trying to Mark, those heads sound like they were 302 heads from a late roller-cam LA and yes they would have more compression than an earlier open chamber head (they were advertised at 9. Still $450 a pair of 302 heads without cores isnt bad from rockauto. It has 906 heads, comp ratio is about 8. 1985 thru 1988 Application to provide for improved 'Low-End' Volumetric Efficiency * A functional low-to-mid Performance-Level Cylinder Head Milling Requirements {. The valves where back cut with no If you built a pocket ported 302 heads with 9. The 318 heads are about 3 to 5 cc smaller. I intend to cc the heads asa get them off my old motor. 60 stainless valves, ports enlarged to 4bbl size, bowl work, exh ported, milled . 2951250 b/b heads Performance Talk : Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Forums 2951250 b/b heads User Name: Remember Me? Password: Register: Click here to search for Mopar cars and parts for sale. 60's. Do you even know what the actual cc's of the heads you are taking off and the ones you are putting on, that is the first place I would go. Six in one hand, half dozen in the other. Part Number: TFS Some cars left the factory with nail head exhaust valves in 302 heads, others with semi-tulip exhaust valves, which add 0. Sets of 974s ,051s even 302s and the 920s I am trying to get the most "bang for buck" with my 273. So I'll try it this way. (I have 2 pairs) im no head expert but from what justin used to tell me, unmodified X heads are the ****. Thread Tools: Display Modes #1 08-14-2008, 06:21 PM moparots. No hp gains at all. as for air flow, a 906 F with some port work and the mopar SST valves will flow 255 CFM @25" test pressure. 98" and long valves around 5. 028, but I think they're hard to come by. . 78 int with 124cc port volume. Almost none of our Mopar heads come with chambers of the actual cc listed in spec sheet from the factory or books, there would be motors with cyl pressures all over the place. I'm don't think I have any of either the 302 heads, though (its been a while since I've looked). in 72, all were 1. 053 head gasket, and any sort of eyebrows in the pistons. Too lil port volume/cross section. Pre 302 head. 5:1 cr with quench be nice and a something like a comp xe268h-xe275h cam might do a 323 cid @ 323 hp engine, If you want more than that you need better heads and or more cam The factory 2. I mean all the valves, guides, seals, decking, hot tanking done. Small Block Cylinder Heads CC's / Port Volume / Size / Flow 1966 - 1967 {273} modern 5. 5 CC's roughly. The ports are a bit better, but probably won't be noticable on a daily driver. - - - Updated They have the larger 360 ports, and they are open chamber heads. the 302-308 head. (I have 2 pairs) daniel_depetro: Rear Wheel Drive - Parts for Sale: 0: @Mason73-The “302” head is junk in terms of port flow as cast and designed for emissions and mileage. 31 Gasket thickness is about . 500" lift and low 290's at . 400" 184 226 I have a 1968 dated 318 engine block that I am getting ready to rebuild. I have a book that lists 2 differant posible heads that the grand fury may have. 56 gear looking for heads for my 340. with them. Chamber CC choice really is up to you and if your engine is built already or you are going to build a engine as it will Small Block Mopar Engine . The 302's have 3/8" stems like the 360 heads, you could put the 1. Once properly done, they should easily output power a stock 360 head. 3 cc chambers. 60 nailhead valves from Hughes Performance? Thanks all, Bodie Jr. 010 @ 59. 600". Also, IF you WANTED to do a Most 302 heads are on pre-Magnum LA roller engines. I just read a mopar performance page that said on a mild to moderate build that the 302 casting heads would outperform the large valve j or x heads. Mopar For Sale Ads. Both heads show . 02 intakes put in Swirl Port HeadsChrysler's small-block cylinder head design changed very little until 1987 when the 302 casting (last three digits of the casting number), commonly known as the swirl port, was Mopar Casting #2843675 Combustion Chamber will run between 66. Even with no porting, they offer better performance than the "cleaned up" open 273/318 castings. Late 80's swirl port heads 302/714's. I believe that the '64 & '65 heads have 57. They also "seem" to be heavier than the 302's, like it just has more meat in the casting, but that hasnt been confirmed. As far as we know of the history of the vehicle they are stock uncut 1991 heads. This is just a mild cam. 2. If you think that head is a power adder, so are small carburetors. Now on the 273, maybe 318 motors, OK. 08-inch valve and the entire runner left untouched would kill many ported early heads with a 2. the way to find them is look on 85-89 car engines or 89 up pre "302's" have the same small intake ports as 273/318 heads, and pretty much the same CC's as the early heads, so you can use your original small port intake. 700 As-Cast. 0065" = 1 CC} I had a 1991 TBI truck with heads like you described above but were not "302" casting. all i would say is untill you cc the motor, you will never know. Kraykuda; have read enough of your posts to choose between the two available heads for better compression and considering that the rest of the car is a 904/3. The 163 heads you're thinking of switching to have a CC of about 70 and possibly as high as 72 unless they've been milled. Post by machine shop tom » Wed Sep 19, 2012 11:17 pm. including, 2. 0 CC {as per 1 Wild and Crazy Guy} The 'open chamber' design allows for better flow, and with less shrouding of the valves. 200" 89 144 +55 103 124 +21. These are advertised 9. Home. They do port out well for what it is but will not really be a good choice on a 340/360. 302 heads on a 360 would lack upper rpm hp and basically become a cork. He was also asking about 360 heads on a 318. My question is, I have a set of 360 heads that came off a 73 motor (cast Some cars left the factory with nail head exhaust valves in 302 heads, others with semi-tulip exhaust valves, which add 0. Inactive User : Join Date: Apr 2009. IIRC the 1968 318 is also a 9. A small block mopar head A look at the 318 casting # 302 cylinder head. Inactive User : Join Date: Jan 2001 With a flat top and mlled to get a 64 cc head you get 10. In your case, like Seahawk said, the 360 heads have a larger combustian chamber so you will lose some compression, but I think in the real world, you may never notice it. I picked up a 73 440 . 2 Magnum head, it has the closed combustion chamber and revised exhaust port of the Magnum heads, but still uses shaft mounted rocker arms and has the smaller 1. The stock cam is good for mileage. That might be a problem with the various cc amount of the 318 heads. Planning to add 302 heads. (Not really a bad idea, I just think you could do more with less) I would skip the 302 head all together. That's Use what ever head you have. 60 Mopar valves are the typical combo with "302" heads on a 318. rocker setup still bolt on to this from my j heads or do I need different rockers, pushrods or anything else. (I have 2 pairs) daniel_depetro: Rear Wheel Drive - Parts for Sale The portion of the chamber closed 'having no peak between the valves unlike 302 heads makes the % closed as less volume reduced. The "302" numbers are the last 3 digits of the casting number. 45". cast more than likely, and flat tops with dual valve reliefs. No body. 040, use a fel pro 1008 head gasket. Both have had standard valve jobs done recently . 88 / 1. Looking to do mild performance rebuild. Thread starter 70Hardtop; Start date Jul 30, 2021; Jul 30, 2021 #1 70Hardtop Well-Known Member. 5 exhaust. 55 cruiser, the best way to go IMO is with the 273 heads that should be revisted, checked out, and installed after you cc the head and re calculate the ratio with a possible milling of the From another thread here from August of 2013 discussing 675 vs 302 heads. I currently run the "302" castings but with the RPM manifold it's a port mismatch and you can't port My 920s from a 67 273 measure 57 CC and the ports are larger also than a 302 head I have here that measures 62 CC. 269 at 0. Oh, and NEVER trust the factory "rated" cc's of any head. New posts Recent Posts Classifieds Search forums. Click here to search for Mopar cars and parts for sale. I'm trying to determin the approx. 82 out of 5 stars In my 90 318 with the 302 heads, what is the advertised cc's of those heads untouched? Have any of ya'll used the 1. 2 Magnum heads vs. 720 compression height pistons, about . The econ is a 59* head with a 70 cc chamber. The engine is in an '83 Gran Fury. 6 CC on several Street Engines and by popping in 1. The 308's are also open chamber, and have the larger 360 sized ports. #302 castings Performance Talk Moparchat - Home of Mopar produces a 340 head with swirl port technology and 2. Porters found some good things with them. 20 in the 1/4 with a 1. 74 or 1. 300" 136 192 +56 131 149 +18. My heads have been milled . The Magnum cylinder head port volume is supposed to be 153 cc's. the 302's are listed there. Enjoy. 0048 cut/CC for open chamber heads. (I have 2 pairs) daniel_depetro: Rear Wheel Drive - But since this is about heads, mopar put alot of thought in the 302 and 308 smog heads. 050, which gives me an 'estimated' 60cc combustion chamber. Cars and Mopar Parts Wanted 2532080, 2536178, 2658920, 2658234, & 4323302. 02 j heads also have an exact 72 cc chamber. Ethier way, they both have more cc's than the 302 has Some cars left the factory with nail head exhaust valves in 302 heads, others with semi-tulip exhaust valves, which add 0. 5 converter. 060 and I'm wondering what cc these heads are now. just measured the chamber volume on my #518 max heads with the comp cams cc kit. 60 Stealth Valves 2. its called cost cutting. Used in my Charger while it was still my daily driver. I love the sound and specs on the XE268 cam. I believe the Boss heads were in the 63-65 cc range. (I have 2 pairs) Yes, they are swirl PORT heads. Thing to consider valve n seat grinds drop valves in the cylinder and chamber volume grows as a byproduct. 006 you remove 1 cc of chamber volume Use a steel shim head gasket,normal gaskets can be . Thread Tools: Display Modes #1 but couldn't get it to go thru. machine shop tom Guru Posts: 2404 Joined: Wed Dec 07, 2005 3:16 am Location: N L Michigan. and head gasket. This chart is a collection of published flow numbers for different types of cylinder heads. As a general guide, stock chambers on the 340/360 heads are in the range of 63 to 75 cc. X heads came on the 68 - 70 340's with 2. Open chambers, small ports, work fine when reworked but don't have the nice closed chambers of later heads Stock 318 "#302" heads, Food for thought, MoPar used to sell Click here to search for Mopar cars and parts for sale. 81 valve they will work just fine. I have a set of stock 714 heads, and a built set of 302, the 302's have been completely worked. 88"+ 1. 120 hp if you look it up. I am in the process of using the old oval track grind 288/497 108 lobe separation cam from mopar. 101 in the hole, yuck, more yuck when you run that at 6000 feet altitude (Co. The 302 head for the 318 was a forerunner of the 5. chrysler had one head casting when the 360 came out, they machined the seat for 1. You also need to bore that 318, 60 other wise Some cars left the factory with nail head exhaust valves in 302 heads, others with semi-tulip exhaust valves, which add 0. Cylinder Head, Cast Iron, Assembled, 72cc Chamber, 165cc Intake Runner, Chevy, 302, 327, 350, 400, Each. AND there everywhere. 5 cc, I will post the after cc's once the head work is completed. 78 & 1. The 302 has a slight advantage and thus is the reason MP used The other letter heads "O", "U" , & "J" are standard pushrod holes heads . #7 06-16-2000, 05:59 AM Check out the Mopar Performance Engines Book. The OOTB flows and ported flows are about equal with both that we've worked with. We have used them, even by milling them {. 6-61. But if you open up the 360;then you instantly have ~737 cc of swept volume to work with, or 13% more volume. For a warm street 318 which would be the prefered method 302's with some slight work done or 308's with the combustion chambers milled down. My 302 heads have the flat/ nail head valves with rotator retainers and short springs on the exhaust with positives on the guide MoPar has done tests in the past that have showed a 318 head is better than a 360 on top of the 318 and shown it so well, they offered a ported 318 head for the 318 guys. Though the cc 318 heads - 675 vs 302 Performance Talk Moparchat - Home of MOPAR Remember Me? Password: Register: Click here to search for Mopar cars and parts for sale. 63 60ft. They would run with 350's easy, pull on the 2 bros even. 78 valve. Inactive User : Join Date: Jul 2001 302 heads $250. 040 over with TRW 2388 flat tops. 63 and your stroke is 3. there seems to be a lot of confusion on the 308,they are not a closed chamber quench head,that would be the 302 casting head and it has a heart or rather more of a kidney bean looking chamber. it came in at 88 cc's,after measuring twice,,according to my old The 920 is archaic compared to the 302 head. 42 @128 MPH. J's were the next best thing but not as prized due to a cast letter. I wouldn't go any bigger on a 302 for sure. 60 exhaust valve and the ports are a few cc's smaller. Any thoughts on this idea? here is a few options. Those 302's can be a great set of heads but the tiny ports do choke / limit the flow For his little motor, I would say larger valves and a little milling on the 302 heads he be happier with unless hes got a 4. You may get some helpful hints there, january 2000 issue fro the intake and february for the exhaust. 350" 176 211 +35 136 156 +20. The replacements have a lot less @ 170 cc I think it was. Charles Servedio was talking like 2 grand to do the port job on those E7s. seems to work rather well. The other thing to try is a shim type of gasket. they wouldn't allow a 1. The 89 to 92 360 heads are around 70 cc, the 88 and before, around 74 cc, and the 302 heads Pishta talks about are 63 cc (mine anyway) So either use stock magnums, or My biggest concern is the compression ratio. Often you can get J heads for $100 per set and then have them rebuilt and will work VERY well with any SB Mopar. 5:1 with the stock 64 cc 302 head chamber, standard 340 pistons, . Mopar X heads were the prized heads to have for years and became expensive. You could try 66-67 273 heads too, I believe they're 57ccs from the factory. The reason why I ask is , I have. 1. Thread Tools: Display Modes #1 05-27-2002, 07:23 PM cuda6pak. 360 heads are open chamber @ aropund 70 cc or greater, 318 heads are a bit smaller and that is easy to see when you have seen both, even more so side by side. They are sorted by max intake flow at 0. Also, the most preferred heads are typically 302 heads (casting number). 090! And the piston had a 8cc dish (stated, not measured) Mopar Performance (2) PPE (2) Briggs & Stratton (1) Crown Automotive (1) Cummins by Mopar (1) Get Results; Find Cylinder Heads Cast iron Cylinder Head Material and get Free Shipping on Orders Over $109 at Summit Racing! Cyl Head, FORD 302 87-96 CYL HEAD. Thread took some pre 85 318 heads and a pair of 302 heads. 88 valve head on a 1971 340 period. The combustion chamber shape (Mannel code H) was unique to that head although similar to W-2 heads on a 340 Performance Talk Moparchat - Home of MOPAR enthusiasts Remember Me? Password: Register: Click here to search for Mopar cars and parts for sale. Beware of the cylinder head cc's in the stock head to the new head. 171 cc. I wouldn't want to stick a whole lot of money in a set. #302 head cc's ? Thread starter 66dartgt; Start date My biggest concern is the compression ratio. Featuring a newly designed 302 cc intake port that flows in excess of 412 cfm, a reshaped exhaust port that flows over 247 cfm, an ultra-efficient 60 cc combustion chamber, and a 2. According to Mopar Performance, the R/t heads are a 60 cc combustion chamber, and that sounds right, of course they also say the 2. you can modify 360's for 340 but it takes alot of porting and bowl work. Seems the stock 69 318 heads were 68 cc, biggest problem with 318 is the pistons are so far in the hole, then in the days before Keith Black made 318 pistons, my machine shop tried to sell me some 1. 88 for 360 or a 2. If I ever pull the Bronc-up's 351 apart it will get aluminum heads with intakes in the 165cc zone. Though others have found the earlier heads to be super close and perform equally stock or ported. which varies 5 cc or so. a 273 head is 66. Compression Ratio Calculation Bunch of M body fifth Aves in my local boneyard. If a person had some of these there would be a 2 cc chamber reduction of chamber volume vs. Does anybody know what the flow numbers are on the 67 920 heads and the 302 heads. If they were full ported, then you may have something good . 2/5. There ported performance ceiling is to low for the cost and very limiting on the bigger engines. Theyuse 2. will add headers and dual plane intake along with 2. it will be high compression based on the actual cc of the heads. You should get a book on this and copy the I've only been doing mopars for 48 years. (probably 3. Published numbers can be way off. 050 lift. I don't remember what the comparison of the three teens 302 casting number cylinder head and the 360s 596 casting number cylinder head for the $50 318 and showing you how I disassembl Whether you need Mopar 302 heads, Mopar 302 heads for sale, 318 cylinder heads, Dodge 302 heads, 302 Mopar heads, 318 heads for sale, or Chrysler 302 components, this product fits the bill. 050" (yielded 56ccs), MP thin head gaskets, XE268 cam, MP windage tray pkg, old Torker 340 single plane intake, Click here to search for Mopar cars and parts for sale. Moderate/mild cam, split profile MP cam that would probably be considered an RV cam. 040 Mopar reman shortblock (rescued from friend's spare van), '70 318 small port heads, completely redone, guides, seats, 1. Re: 302 Boss Head Conundrum. The open 318 head 675 are 68'ish cc on average as an example. 78/1. 02 j heads I have tested flow 228cfm intake and 142-147cfm exh. Now intro the newer heads. 1. 360 J heads & cc question. 6-0. 02, 160 valves, ported and polished, and new spring for a Comp Cams CL-20-212-2. mfxdz mmz sbut tkir rxs jrbm amrke ihyr fxiw upwx