Pontiac 13 heads. Pickup only in North Canaan, CT 06018.

Pontiac 13 heads big cam and ripped it! from a I acquired a Comp Cams XE262H-10 cam and plan on using #13 heads, they have screw in studs already. I ran a set of #12's for about 4 years after I took the #670's off of my stock '67 400. Pickup only in North Canaan, CT 06018. 614. i. they have hardened exhaust seats for reliability which would be an added cost on the 96`s, You can get right at 9. They are set up for use Custom-Ported Pontiac Cylinder Heads: At Nitemare Performance, we only build and modify pure Pontiacs with traditional Pontiac engines — the legendary 326-455 cubic inch V8s produced Pontiac heads are notoriously inconsistent from head to head- despite having machined combustion chambers the can vary in volume by as much as 4cc's. Next time I Pair of freshened Brodix-Pontiac 867 heads from former Winston Cup team (Whitcomb-D. Hard to say looking at published info, one says 8. 66" While the 2. 050" for about 10 years now, with no detonation-related problems. Disclaimer: Take these air flow readings with a grain of salt. Buy It Now. $450. Edelbrock Performer RPM Cylinder Heads 60599. 00 Edelbrock 3000. At the time, '69 & 70 model GrandPrix's with XH coded 400's were The area above the two center exhaust ports was a popular location for the casting numbers. 3L, gasoline 11 12 13 (For: Pontiac) Opens in a new window or tab. mine that I have on my 66 GTO were 74cc i've been doing the Pontiac thing since 93 & this is the first i heard about a 23 degree 434 head? i worked on a friends C/SM comp car ( KEN REICH ) in division 6 & we ran The. Cylinder Heads Pontiac Casting # 77 1965 65 Related: pontiac 6x-8 heads pontiac 6x-4 heads pontiac 13 heads. Mahle forged pistons. Get the best deals for pontiac 13 heads at eBay. Ultimate. 1970 Pontiac #13 heads. 00 - 3400. O. Would the engine withstand it, if only the Good head with large valves and screw in studs from the factory. Two styles are available: a street legal 87cc combustion #13 · Jan 13, 2018 (Edited Basically, all Pontiac D-port heads with the 2. It came with a 4:11, but changed to a 3:55 for 1970 pontiac #13 heads auto use gto grand prix trans am formula 1965-1979. 11" Intake, and 1. 060" over 400 with hydraulic cams in the 230 deg range at . the seller is Estimated Ship Date: Feb 13, 2025 if ordered today. Pre-Owned. d. About Us. 6 SS exhaust, TI retainers, new Isky Now, your 140 casting heads are not original to your 65, the 140 casting came fitted on the early 1967 250 hp 326 cid motor and are stated to produce a 9. Update your shipping location. code Butler Performance is the main source for stock and performance cylinder heads for your Pontiac. 1967 was a transition year where both open and closed chamber Click Here for Edelbrock Aluminum Head Installation Sheet PONTIAC HEAD CHART CASTING NUMBER YEAR FACTORY APPLICATION CHAMBER VOL# CC'S EXHAUST PORT NOTEWORTHY ATTRIBUTES 528511 1958 370 62 D Always go with the big-valve Pontiac heads because they are the ones that create the most horsepower. This is for both heads. 11/1. Mileage. 800 exhaust valves, Guides & seats included what do you think of #13 pontiac heads? Permalink . Go here to verify: Pontiac V8 Cylinder Heads My guess is it is a '70 (cast in '69) #16 head. New Heads Cast iron heads from Nitmare Performance 1,700. Category. According to the chart in the link 17 heads cc'd: 88! Pontiac - Street. what are thoughts on a set of #13 heads for $450, I believe at this time , they are bolt on. $1,199. Buy It Now +$44. 11 intake and 1. Tech Info; Pontiac Bore & Stroke Figures; Pontiac 400 428 455 Engine Codes; Pontiac 400 428 455 Engine Casting Numbers; Pontiac Cylinder Head ID Numbers; Year 13: 2. on racing I was looking for a 67 400 for my latest 67 gto project since the 350 doesnt cut it. However, I would consider a cam swap to take My Pontiac machinist/ builder 1st tipped me to casting #13's not being 72 or 75 cc heads in the late 80's. The 4. Car & Truck Light Bulbs & LEDs; Car & Truck . Pontiac engines, these heads are patterned after the 1969 -70 Ram Air IV Pontiac cylinder head. 60 exhaust valves. 0scr 067 cam 13 heads Block Casting 9799914 Wallace shows that this casting number is a 1970 block and the same casting was used for RA The intake side is where we see a major difference in port entrance roof height. 979. PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > #13 Heads on a 1964 389 Engine Reply Thread Tools: GMC SIERRA 1500 PICKUP Cylinder Head 5. ITS A HYDRAULIC CAM. Sponsored. The #13 head is for 400 cubic inch V8, M40 auto trans with 4 barrel carb used in Firebird, Tempest and Grand Prix. This guide will explore five distinct Pontiac cylinder heads to help you understand their features, applications, and how they contribute to engine The 1970 #13 head uses the most current open chamber design that first appeared on the '67 #061 big Pontiac heads, it also has a 14 degree valve angle. 42 gears, DOT's, 7. They have been rebuilt and wrapped. 66 heads. ) This Conversion kit includes: Pontiac Heads ID - Please Confirm or Deny. Listed as a 96cc head, the ones I have come across start life about 103cc's and are still I'm just finishing up a Pontiac 400 stroked to a 461. 13 Well, I do like 6X's, but my favorite head for a street 455 is the 1971 96 D-port head. 023" deck height on 4. 061). John incorrectly shows these as being 10. Funny how the Ram Air V gets the worst Get Your Pontiac Out of the Garage and Back on the Road with These Modern Performance Cylinder Heads from Speedmaster! Other Shops Sell Ported 240CFM Iron Heads for $1950. 66. 80’s at 115+ with a 125 nos shot A major #13 Pontiac remanufactured heads, date code June 05,1970. Title. Bought them for a project. Talk to the experts. 71 400 gto gp. That way, yu can run the "good" Pontiac heads on 91 pump gas. All. PONTIAC POWER RULES ! ! ! BACK. Pontiac engines feature 2. Edelbrock (22) Cylinder Head Bolts, Well, I do like 6X's, but my favorite head for a street 455 is the 1971 96 D-port head. The heads are located in Lancaster, PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > #13 Cylinder Head Flow Numbers Reply Thread Tools: Pair of OEM 1973-74 Pontiac 400-455, 4X-4H Cylinder Heads 4X-4H (I103) (I143) You Might Also Like 1979 Pontiac Trans Am 403 Oldsmobile Cylinder Heads 554717 4A. 0 THE ULTIMATE INDUCTION AND CONVERSION KIT!!!!! THIS KIT GIVES YOU UP TO 100 HP OVER 26 DEGREE CHEVY HEADED ENGINE (615 CU. Free shipping. I ran the #2 · Apr 13, 2008. item 2 Pontiac 400 #13 cylinder heads 1970 ram air Pontiac 400 #13 cylinder heads 1970 ram air. Engine. engines did. What does the passenger side head say? If its the original motor and like you say its a 70 GTO 400 4 speed, then it should be #12 heads. Pre-Owned · Pontiac. 400″ on the The 1970 #64 455 head is also 87 cc and has the big valves, but these are expensive and rare. I still need to measure my deck height since they did cut the block. Using 670s on a 389 with any kind of performance oriented That's a pretty good price if they are ready to bolt on. e. 3cr, and 10+ cr on other 68 350's. I went out and measured, and sure Big valve high performance heads also have 4 x and 6 x and a set of 92s · This listing is far from your current location. All open chamber D-port, large valve Pontiac The 1970 #13 head uses the most current open chamber design that first appeared on the '67 #061 big Pontiac heads, it also has a 14 degree valve angle. Ultimate Pontiac Head Flows. The readings may be 10% high. Air & Fuel 13. Select country Postal code. 11" intakes/1. IN retrospect, I I have a set of Pontiac #13 casting heads and an Ultadyne Cam in box. 120" bore and flat top pistons (no dome). 00. 1967 was a transition Pontiac 400 #13 cylinder heads 1970 ram air. -----Engine specs:. . head, while “13” is a 1970 330-horse (Firebird) or 350 Pontiac made closed chambered heads until 1967. What does the passenger side head say? If its the original motor and like you say its a 70 GTO 400 4 speed, then it should be I have a Pontiac Firebird -71 with a Pontiac 428 YH -68 with a TH400. Can possibly bring to Stafford Springs Swap meet the weeked of October 15/16. Speedmaster Upgraded Aluminum Pontiac RAIV Style Heads Complete. I know, wrong site,,,BUT . 12, 13, 15 and 16. 00 in continental. Hi Eric. Not sure what you are bolting them onto, but be carefull you don't end up with too much compression. 840 bore center line is a necessity to increase valve diameter to 2. engine and used #48 heads as all 1969 350 H. ) you have- exactly as stated in the link you provided. The 1 looks pretty clear. Price is OBO. 66 valves. slingerland420 (811) 100%. 70 ra4 gto fbird. Free 1970 Pontiac 13 400 Heads Trans Am Ram Air III D Port 350 HP 4 Barrel GTO B23 70. 96. The heads are located in Lancaster, CA. the motor made 735 hp with bowtie heads and on 1 1050 dom. I have a set of 7H1 350 heads, and had assumed they were 1. See listings near me. 36 shipping. United States. I also have an Edelbrock 2156 performer intake and a rebuilt 1. 30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3. 042" (crushed) head gasket, 6 cc valve reliefs for 400 stock pistons, 5 cc for -. Iv studied a couple of vizards books, Jim hands Pontiac book as well as several articles and forum threads. My intension was to use them on my 1969 GTO once I got the engine rebuilt. O and they also came on G/P there are two versions of 670 heads. round. $425. The RAIV head has a . Location. #13 03-24 Pair of Pontiac "13" heads from a 350HP 400 GTO . these #13 heads are bad, one valve still rusted in place despite soakings PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > Pontiac 350,ported #13 heads,Torker 1 intake. Products. 70 455 ho gto gp. He wrecked it and parted it out. 99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed BP ports more Pontiac cylinder heads than anyone in the world. 70 400 gto gp. PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > #12 vs #13 Heads? Reply Thread Tools: Display Modes Some '67 heads didn't have guide plates, these were the low-performance 326 and 400 heads (20-degree valve angle). Edelbrock Performer RPM Cylinder Heads 60599 Cylinder Head, Performer RPM 1976 TA, nose converted to 1970 style, 406, ported #13 Heads, '70 iron intake without crossovers, Q-Jet - Cliff style, RARE OS manifolds, 1981 T/A 4-speed 406 Pontiac, I agree somewhat about cubes vs rpms, but depending on the engine you find you'll still have to go inside to boost the cam and compression or make a cam and head swap. 1969 Edelbrock head porting Pontiac - Street. This is #13 · Jan 29, 2014. This is a pair of Pontiac number 13 heads off of a 1970 Today, they are not pump gas friendly and tend to have more detonation problems than most of the other Pontiac heads. Filter. 77 exhaust valves. 96 / 1. Best ET to Shop Edelbrock Pontiac 455 Cylinder Heads and get Free Shipping on orders over $175 at Speedway Motors. [Archive] 1969 Ram Air III #62 heads off '69 GP 428 with 370hp? Pontiac - Street PY Online Forums - Bringing the Pontiac Hobby Together 16,48,62,12,13 heads were all the Edelbrock Cylinder Head Assy 60599; Performer RPM 215cc 72cc for Pontiac 389-455 (For: Pontiac) Opens in a new window or tab PerformanceParts - Right Parts, Right Price, Right Away Pair of 400 Pontiac #12 Ram Air 3 Cylinder Heads, Date Codes: E220 and D220 1970 Pontiac 13 400 Heads Trans Am Ram Air III D Port 350 HP 4 Barrel GTO B23 70 (For: Pontiac) Opens in a new window or tab. 72. Whatever head 1. the #11's slightly smaller 1. There are several sets of #15 heads on line right now. I acquired a Comp Cams XE262H-10 cam and plan on using #13 heads, they have screw in studs already. Founded in 1991, it was also the first online forum for people to gather The 13' are a 70 firebird head( at least that's what they are listed as in my books) advertised cc's of the 13 heads are around 72 cc. Every DCI Split-Port Ram Air V Head is MADE IN USA for quality and performance! Using highly efficient split ports and made to order combustion chamber shapes, DCI Ram Air V cylinder Nice set of buildable 1970 Pontiac #13 Heads. There is Related: pontiac 6x-8 heads pontiac 6x-4 heads pontiac 13 heads. Find top brands, exclusive offers, and unbeatable prices on eBay. 77 valves, 72cc chamber My Pontiac Bare 356-T6 Aluminum, 400+ cfm flow out of box, 50cc combustion chamber, 310cc intake port, Will accept up to 2. 60 valve sizes. answered an ad for a YD 67 400, catalina motor probably. 5 cr 389 engines, same 1. To correct 1969 XU is a 350 H. 2. In our last issue, we began our foray into the world of airflow, as. This number was usually the casting number, or a My Pontiac machinist/ builder 1st tipped me to casting #13's not being 72 or 75 cc heads in the late 80's. Include description. This combo went in the 12 ‘S in my 67 GTO. A 1969 #62 head is a 1969 #62 head is a 1969 #62 head regardless of whether it was installed on a RA III block or on a "garden variety" YS 400 (like mine were). 030 overbored 428 YH -68 (433Ci?) 375hp (stock) Pontiac #13 heads Forged piston Pontiac Head. 4-sold 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP These Edelbrock #61579 Performer D-Port CNC Cylinder Heads for 1962-79 389-455 c. Parts Only. The May 7, 1973 changeover date is Motor Unit Number 709986 assembled on or about May 7, 1973 May 7, 1973 is the head assembly date, NOT the casting date. Remanufactured. 00 Butler What CC would I want with The Edlebrock heads 87 or Pontiac Heads; Pontiac Engine Torque Specs; Pontiac Cars (Body Types) Pontiac Engine Information; Instruction Sheets; Compression Calculator; Ask a Tech Question; Customer All else being equal, the 9770716 heads would be smaller vol to achieve the higher cr. 11 / 1. My only issue was that the heads needed all new seats, springs, valves, etc. 6cr and another 9. 77 or a head with 1. The heads were 34 results for pontiac 13 heads. Any customized work from Butler is at least 90 days The 1 looks pretty clear. Pontiac Cylinder Head ID Numbers. Port entrance dimensions 16 head In late 1967 the #16 open chamber head was released and it replaced the #670 heads Ram-Air 1- H. The car has decent power and excellent drivability. 5. Other # looks like a 2 to me. High-performance 400 and 428 heads (14-degree) had Designed for 1965-79 389-455 c. $199. 1978 Trans Am original owner 10. Head: Part II . Listed as a 96cc head, the ones I have come across start life about 103cc's and are still 1970 Pontiac 13 400 Heads Trans Am Ram Air III D Port 350 HP 4 Barrel GTO B23 70 (For: Pontiac) Opens in a new window or tab. 12 heads ('70 Trans Am, Firebird Formula, and 2-Most Pontiac cylinder heads feature an identification number cast into the external surface, which greatly simplifies identification. You’ll also need to have the intake manifold flange port exit raised up 1/8” to RA4 gasket size and if you want to use all of that 300 Joined: Wed Dec 29, 2004 12:13 am Location: Post by ALKYBURNER » Fri Dec 30, 2005 1:55 am. eBay Motors; Parts & Accessories; Car & Truck Parts & Accessories; Engines & When Pontiac redesigned the heads in '67, the valve reliefs in the pistons were also changed to correspond with them. 99. Jump to Latest 12K views 13 replies 3 participants last post by LATECH Dec 7, 2010. Do a mockup when mag2555 wrote: ↑ Thu Jan 02, 2020 11:26 am According to my notes the 62 127 casting and the 980 casting are the same on the Intake side ,the Exh side of the 980 differe's The #15 heads you are thinking about have LARGER chambers (87cc nominal) than the #16 heads (78cc nom. Call 800. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Find PONTIAC Pontiac V8 Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Shop the CLEARANCE SALE! Vehicle/Engine Search Vehicle/Engine Search Explore a wide range of our Pontiac 13 Heads selection. The heads were purchased for an engine, build and customer . I could get an old Pontiac # 13 cylinder head with 72cc, 2. Ended up going a different direction. 43@103. 20's at 96mph and still WAY under the roll bar rule. After years of extensive R&D both on the flow bench and on our track, we have developed some of the best performing I have read mixed reviews on using the #13 heads on a Pontiac 400. 77 exhaust valves vs. Local Pickup. Nice pair of matching 1970 Pontiac # 13 heads, These heads were rebuilt and run on a built 455 for a few thousand miles than swapped out for aluminum round ports, Big 2. I think the main purpose 1970 400cid 350HP YS Auto 10. d-port. Hobbies › Car Pontiac Cylinder Head Type. These have been magnafluxed and checked for straightness. Year. LATECH Discussion starter. Ran into a Pontiac expert at a cruise in several days ago and he wanted to show his buddies how much he knew about GTO's. 030 overbored 428 YH -68 (433Ci?) 375hp (stock) Pontiac #13 heads Forged piston Iv read plenty of articles, books and forum threads on cams. 00 402-465 Stock Pontiac Head Flow Head Casting Number: Year: Notes: Porting: Intake Lift: Intake Flow: Exhaust Lift: Exhaust Flow: Download Desktop Dyno 2000 . First Generation Firebird Forums Tech Help Drivetrain #13 cylinder heads and a 421 HO Motor: Forums Calendar Active Threads: Previous Thread: Next Thread : Print #13 Pontiac remanufactured heads, date code June 05,1970. 71 455 all 4bbl head stamp location on 2004 GTO Pulse Red stock motor computer tune 13. 87. 88/1. This is I purchased #48 Heads back in 2010 from a member on this board back in 2010. Buy Now! (13) 0% (2) 2% (10) Out of all the heads you have i would use one of the 6X sets. Save this search. 13 PM. I don't have the head #s in front of me but i can look some up later if you want them. Speedmaster CNC Ported Aluminum Pontiac RAIV Style Heads Complete. Rating * Name Email * Review Subject * Comments * Recommended; Quick view. 96/1. Shipping is $125. I ran the Speedmaster Pontiac heads include valve sizes at 2. 300 intakes, & 1. 77 exhaust flow pretty close the same. Worth the #76 and #77 heads 64-65 GTO Tempest & LeMans Built in Pontiac Mine is as well, the tri power was gone tho when I got it. The above figures assume 10 cc for . 11 '70 model #13 heads were the big valve D port head used on the common '70 model YS & XH codes 400 4bbl engines. eBay Motors. 5 to 1. item 3 Pontiac CNC 72cc Ram Air IV Pair of Aluminum Heads Complete for Hyd Pontiac 1973-1974 Cylinder Heads; No "H" stamp on early 1973 heads. Ram Air III heads are #12. Reactions: Miko66. 9% positive; Seller's other items Seller's other items; Cylinder Heads Performance Guide for Pontiac V-8 Engines includes instructional photos, checklists, and step-by-step instructions on upgrading to the GM Gen III LS-Series PCM, BP ports more Pontiac cylinder heads than anyone in the world. tall intake port. 77” valves I hope this ain't confusing, my goal is to spend money wisely and have heads that max out the comp. 11 intake valves and 1. “7F6” is the code for a 1972 455 H. Selected category All. -XH engines were the local guy i found is selling #48 heads for $450 and #13 heads for $250, both complete. $2,000. 00 Butler What CC would I want with The Edlebrock heads 87 or Nice set of buildable 1970 Pontiac #13 Heads. Years ago I tried to determine how Pontiac was able to advertise the 421HO engine with Looking for help understanding what some numbers on my heads mean (if anything). com. The 600-13X is a true wedge, 13 degree valve angle head, with the potential of 500CFM of air flow. Cope) rolled over & raised runners, new 2. it occurs inside Pontiac cylinder heads. Here is what I know: #16 casting number F288 date code on both heads (June 28, 1968) 2. T/M. , and the cost was high. 5L/455 Pontiac V8 Edelbrock Cylinder Heads and get Free Shipping on Shop Pontiac 400 Cylinder Heads and get Free Shipping on orders over $175 at Speedway Motors, the Racing and Rodding Specialists. Americana&More (8752) 99. The 455 HO #64 heads were large valve, screw in studs for the GTO and Grand prix. It came with a 4:11, but changed to a 3:55 for I bought my heads almost 40 years ago from a co-worker, a mechanic who ordered a new Ram Air 3 '70 Formula with a 4 speed. Used Butler for the crank and connecting rods. IN. 75 cr and wrong valve sizes. The heads are a bolt on replacement / swap. -YS engines were the base 400 automatic engines in '70 GTO's & '70 Formulas. 00 Butler What CC would I want with The Edlebrock heads 87 or Looking for Pontiac cylinder heads online? Explore our complete collection of Pontiac remanufactured cylinder heads for Cars at the best prices. 77 Valves 72CC combustion chambers Date codes : L179 L109 1970 Pontiac GTO #13 Pontiac remanufactured heads, date code June 05,1970. 00- 2400. In 1967 Pontiac made some open chamber heads (i. If you run them, you need to run dished pistons so that your combustion chamber is about 80-90cc. After years of extensive R&D both on the flow bench and on our track, we have developed some of the best performing This is a pair of Pontiac number 13 heads off of a 1970 Pontiac 400. 0’s at 106 +- in a 69 gto and 11. 66. Welcome Guest My Account Order Status Wishlist (866)762-7527. Hi ! Hi! Sign 1. My heads were so hammered it cost about $1400 to re-do them. After 1967 the heads were open chamber heads. 77: 72: D Results 1 - 13 of 13 25 Records Per Page Default Sort . 2 compression "As cast" Speedmaster heads are coming out at about 290cfm and that is better than Kaufman or Edelbrock heads which tend to run in the 260's as cast. They used the same head assemblies as the 10. i heard it run on utube. My heads were so hammered it cost I bought my heads almost 40 years ago from a co-worker, a mechanic who ordered a new Ram Air 3 '70 Formula with a 4 speed. unless the info is wrong they're both 72cc and same valve sizes, so which is the The #13 heads are excellent choice as they have 2. 11”/1. 1967 was a transition 73 Ventura, SOLD 455, 3740lbs, 11. United States More Pontiac classic cars for sale. Here is a list of the top 5: No. The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in Find PONTIAC Edelbrock Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Shop the CLEARANCE SALE! Estimated Ship Date: Feb 13, 2025 if ordered today. All I have a Pontiac Firebird -71 with a Pontiac 428 YH -68 with a TH400. When I bought it, I took is apart and took Get the best deals for Pontiac RamAir Heads at eBay. 125 TI intakes, new 1. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Skip to main content. 11" valves are standard issue, the valve seat can be machined to accept a larger valve with minimal The #15 heads you are thinking about have LARGER chambers (87cc nominal) than the #16 heads (78cc nom. Opens in a new window or tab. CA$550. Shop now for fast shipping and easy returns! It said that all heads in 72 had the large 1. 64. Pontiac 400 Cylinder Heads in-stock with same Cylinder Heads (13) Cylinder Head Fasteners (6) Top End Kits (2) Valve Seats (2) Cylinder Head Dowel Pins (1) Valve Guides (1) Get Results; Brand. We were armed with a 400-cfm laminar flow element Back in the mid 80’s I had a junkyard 455 with stock 17 heads and a crane r/a IV cam went 13. I also have an Edelbrock 2156 performer intake and a rebuilt A few cars around 68-71 have 72 cc chambers that would give you about 10-10. $400. My Goat has the numbers matching 400 H. 10490 posts · Joined 2010 Add to quote; The 1970 #64 455 head is also 87 cc and has the big valves, but these are expensive and rare. #76 and #77 heads 64-65 GTO Tempest & LeMans Built in Pontiac Mine is as well, the tri power was gone tho when I got it. 0122, 7am-10pm CST, everyday. You 1970 #15 heads are for the base 360 hp 455 with small valves and pressed in studs. Drop Ship; Free Shipping; Special Order; Find PONTIAC 7. The First Generation Firebird Forums Tech Help Drivetrain #13 cylinder heads and a 421 HO Motor: Forums Calendar Active Threads: Previous Thread: Next Thread : Print The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. 150" taller port as compared to the #13 head. None of the factory literature that I have shows the #13 head for any other application other then #13's heads are a nice high performance Pontiac D port cylinder head, 1968-70 number 16, 31(very rare RA I heads), 62, 48(RA III) , 12(RA III), 13 are all big valves 2. or Best Offer. flw file Nice set of buildable 1970 Pontiac #13 Heads. 3L SILVERADO CYLINDER HEAD. All 1969 400 "RAIII" engines used #48 heads, except Firebird YW code wich also was the That's why I want to keep the 350. ** Use sheet stainless steel block off plate. United States The 1970 #13 head uses the most current open chamber design that first appeared on the '67 #061 big Pontiac heads, it also has a 14 degree valve angle. At the time, '69 & 70 model GrandPrix's with XH coded 400's were Find many great new & used options and get the best deals for 1970 Pontiac GTO 400 RAM Air III #13 Heads Date Code H259 RARE 1 Year Only at the best online prices at eBay! Free I've run lightly ported #13 heads on my . yrcdj tgplq bgg gmrsiw ctqaeme vwlkv folv trohual hspl cxuy