Let us build you the engine you want in our full service shop. 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 from 1964 through 1980. 15 and a stroke of 4. Search Car Torque Specifications by Engine or Model. 1972 455 block and heads (minor port work at home with the dremel and a good polish) forged stock replacement 1972 pistons my goal is a blower so I left the compression low. com, the official website for Hot Rod Magazine. We have 17 cars for sale listed as pontiac sd 455, from just $5,500. Find PONTIAC 7. Get your Pontiac 455 Heads!. Not hard to tell in pic below which is the one I used. The heads are 1966 421 (092 castings) with 1. 25 compression on any 455. If that's a heads up race engine or your standard street rebuild, we take it to the max. See: HPP 4X Head. Application MCC0039X8 5/16 Valve Cover Mini Bolts Are For 326 350 400 428 455 Pontiac Engines ONLY. For immediate assistance please call us at 1-800-275-7371. We have the largest variety of in-stock remanufactured engines in Texas. Showing 1-36 of 117 results For a full list of products, see our Master Catalog. The 455 Pontiac V8 was introduced in 1970 and provided large-bodied Pontiacs a torque-friendly engine. The motor looked too nasty and beat up to really be a Pontiac 455 (especially since it originally came with a 301), so I offered him $500 for it without the motor, and he accepted. In some cases it may be located on one of the end exhaust ports. side on top of the exhaust port of # 4 & 6. These were only used one year and only on the GTO and some GP's and I have not seen another pair in many years. 69 430 Heads 4. Rebuilding & Tuning the Olds 455/403 Improved Power, Torque and Reliability Monday, April 26, 2010. I have hundreds of cast iron D-port heads in stock. 030 over bore and heads cut. I make no guarantee that information on this chart is either complete or 100% correct. Edelbrock Log Type 6-2 barrel Stromberg 97’s for early Pontiac (61 to 64) Ultra rare Super Duty Intake GM #9772390 used on 1963 421 SD NASCAR engine. Engineers did their best to squeeze out as much horsepower as they could. 34 results for pontiac 455 heads Save pontiac 455 heads to get e-mail alerts and updates on your eBay Feed. Beginning with the first production engines in 1955, Pontiac V-8 engines were cooled by reverse flow meaning the cooling water enters and cools the heads first and then some of the water enters the block and cools the cylinders. Old-school-cool Pontiac performance is alive and well. The 455 wielded massive horsepower, but a new horsepower rating system and tighter emission controls drove the 455's power lower each year until GM abandoned the engine in 1976. 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-Port 1. All modern production engines, and most aftermarket Pontiac cylinder heads, feature a fast-burn combustion chamber, which is easiest identified by its distinct heart-shaped appearance. 7? Have to inform a few Pontiac guys I know. Compression Calculator My thanks to Lee for the concept and research. The price for crating each head is $20 USD The valves and other parts if included are shipped in a separate parcel. Are you searching for Pontiac 455 Cylinder Heads online? Locate Pontiac 455 Cylinder Heads on sale below with the biggest selection of Pontiac 455 Cylinder Heads anywhere online. Olaf Haenig from Germany bought a balanced rotating assembly, Edelbrock Performance heads, a BUTLER/COMP Cams custom grind hyd roller cam kit, and just about everything else needed from Butler Performance to build a 455 Pontiac for his VERY cool '34 FORD!!. PONTIAC V-8 & SUPER DUTY FOUR BLOCKS & HEADS PONTIAC SUPER DUTY FOUR Pontiac's Super Duty four-cylinder engine is building major league excitement in all forms of motorsports. do NOT contact me with unsolicited services. The Pontiac 455 has a bore of 4. 400 Pontiac Crate Engine 450 HP With Aluminum Heads Starting at $12,345. You must find the date code at the back LH side of the block first. Heads courtesy of Dennis Wheeler. >Pontiac 400. 006″ higher. Our site showcases an extremely large variety of listings at the best prices. Rated at 335 hp, it used many Ram Air IV–type components and included revised round-port cylinder heads and an 068 camshaft. 1971 Pontiac Firebird Formula 455 HO: The Firebird Formula 455 HO is an automobile from Pontiac, with rear wheel drive, a front located engine and a 2 door coupé body style. Head Turning Power is unreal. All D-port Pontiac heads with the big valves roughly flow the same from 1967 thru 1979. Pontiac # 15 Cylinder Heads 455 400 - $125 < image 1 of 1 > make / manufacturer: Pontiac. All personal information will remain private on the registry, or at your option you need not disclose any personal information. pontiac 455 Sort by: Featured Items Newest Items Bestselling Alphabetical: A to Z Alphabetical: Z to A Avg. - 7F6#)This was a very rare Pontiac factory High Performance Option,on the "Top of the Line"Pontiac"Big Bore 455HO Block,with the"Ram Air" Package. 6 (W72 Performance Package) engine used different heads than the base 6. 5L-455ci-V8 Engine Torque Specs. We have these forged piston sets available in a wide range of sizes including standard bore and many popular oversizes. Original Pontiac cylinder heads contain a wedge-type combustion chamber that’s fully machined for a clean, consistent burn. Speedmaster has become a leader in its field, built on a long term consistency of being a specialist in aftermarket automotive components. To Search Our Page Using This Function Press Ctrl + F. Home Engines & Components Cylinder Heads Gasket Set, Edelbrock, Pontiac 326-455. 120" bore and flat top pistons (no dome). Outstanding Original SJ 455 ! for sale Current customer rating: ( 2. 70-81 ENGINES CODES. Featured in may 2009 high performance pontiac magazine. 114+ d-port. 1972 7H1 PONTIAC CYLINDER HEADS GTO 350 400 455 FIREBIRD VENTURA V8 ENGINE OEM. It was rated at 360 horsepower, which was 10 less than. Find Pontiac 455 in Canada | Visit Kijiji Classifieds to buy, sell, or trade almost anything! New and used items, cars, real estate, jobs, services, vacation rentals and more virtually anywhere in Alberta. The history of Grand Am starts with Pontiac executives noting incursion into the US market by Mercedes and BMW. 1971 Pontiac Firebird Formula 455 HO: The Firebird Formula 455 HO is an automobile from Pontiac, with rear wheel drive, a front located engine and a 2 door coupé body style. 75-76 455 Heads. Motor was just tore down and ran perfect. Designed for 1965-79 389-455 c. PONTIAC V-8 & SUPER DUTY FOUR BLOCKS & HEADS PONTIAC SUPER DUTY FOUR Pontiac’s Super Duty four-cylinder engine is building major league excitement in all forms of motorsports. 1972 Pontiac GTO for Sale. Home Engines & Components Cylinder Heads Gasket Set, Edelbrock, Pontiac 326-455. Inquire for : 1959-1960 Pontiac 389 4bbl Intake. I am rebuilding the motor and need to part with these original parts. Will not fit 265/301 V8s. 500 lb ft of torque is doable. What is apparent is that while Pontiac had policies and specifications, both seemed to fluctuate as need be to build engines and place them in passenger cars. 200") and high flowing. Free shipping when your order includes this part. Another high end Pontiac engine built by Spotts Performance. Designed for 1965-79 389-455 c. Pontiac spent a lot of money engineering the heads and they flow good,the only benefit for aluminum is a slight weight savings. The main item that establishes a W34 optioned car is the high lift engine camshaft, GM part number 400165. Identify a PONTIAC engine block is very simple, the code is entered, or rather "hit" on the front right of the cylinder block (when you're driving), close to the plane of the cylinder head gasket. 2 crates at 24x12x10" / 85lbs ea + 1 parcel at 12x12x12" / 20lbs Shipped from Canada Vancouver V5R 4B7. Good port jobs, however, are EXPENSIVE. 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-Port 1. for anything larger than 2. Olds", Joe Mondello - Joe and Mike finish their buildup and test results on the engine dyno. 030 overbore by previous shop was not correctly toleranced for forged. Having a hard time finding Pontiac 455 Heads online? Locate Pontiac 455 Heads on sale below with the biggest option of Pontiac 455 Heads anywhere online. To install and degree a Pontiac camshaft you need no particular engine experience but just care and attention. Motor was just tore down and ran perfect. Very good shape, need rebuild. Pontiac motors are completely different from the SBC, and the heads are not interchangable. 5L-455ci-V8 Engine Torque Specs. These head numbers represented chamber sizes. I would use the 6X-4 heads and higher compression. for what it is, and that's just a place to have a little bit of fun and hopefully learn a thing or two along the way. If your needs are a stroker crate motor we can take and modify any Pontiac engine to your specifications. Would you like to make this site your homepage? It's fast and easy. Note that the cylinder number 1 is the next driver in front of the engine (the same location on all V-engines) or just the first behind the power steering pump. "455" stamping in lifter galley, click picture for. To correct for pop-up pistons, subtract dome volume from chamber volume. heads locally first. The Pontiac 350 - 455 engines all use the same big block design and outside dimensions. I know there are a few Pontiac faithful on here. The names Barrett-Jackson, Barrett-Jackson. Cylinder heads are inspected and magnafluxed by our local machine shop to make sure that they have no issues. I would like to tabulate all the info for the Judges, such as how many of a color, convertibles, Canadian built, etc. 1972 7H1 PONTIAC CYLINDER HEADS GTO 350 400 455 FIREBIRD VENTURA V8 ENGINE OEM. They were designed for use on the Super Duty 455 engines and have the best ports of any Pontiac heads ever produced except the 'still-born' Ram Air V tunnel-port. In general 1970 and older heads have 72cc combustion chambers which give 10:1 compression on a 400 with flat-top pistons and nearly 11:1 on a 455. Pontiac fanned the flames with a black-and-gold Trans Am and SD-455 show car, while participation in the Cannonball Runs gave it hip credentials that ad agencies could only dream of. All numbers matching 1972 Trans Am 4 speed WD block code, 7F6 round port heads, custom hydraulic roller cam, stainless steel valves. 470″ on the intake and exhaust. Welcome to the Pontiac Judge Registry. Set of Pontiac 350 4 7 heads from a 1967 Pontiac. We've touched on Pontiac engine performance previously, back when we covered aftermarket crankshafts and stroker packages available for 350, 400 and 455 Pontiac engines. They are big valve 2. pontiac head specs. Let us build you the engine you want in our full service shop. Pontiac 455 Pistons. D-port Head; Round Port Head; Supplies, Hdwre, Tips & Gaskets; Pipes & X-over Kits; Mufflers & Resonators; Intake, Air Cleaners, RA Kits; Billet Pulleys; Timing Covers, Valley Covers & Related; Drive Shaft Safety Loops; Engine & Exhaust Coatings; Mini-starters & Water Pumps; Suspension Improvement. Pontiac 287-455 Ultra-Action Roller Camshaft (275R) Extensive cylinder head modification, bigger valves, lightweight valve train, titanium valves, maximum flow. Pontiac heads like the 6X and practically all other production Pontiac heads likely to be used in a performance-orientated build originally had screw in bottleneck studs and steel guideplates. TA Performance is proud to introduce our new, all aluminum 455 Buick engine block! This block has been specifically designed for every engine build imaginable. If your head has a large S1 cast into the the area where the rocker arms sit, don't get too excited. I have sets of 4X, 6X, 7H1, 7M5, 11, 16,. 060" ~455 bored. Read on as we take out our two-bolt 455 block engine out from out 1973 Pontiac Bonneville wagon and build up it's horsepower. These joints are harder to create, but last forever. Pontiac Exhaust Manifold Identification. Pontiac improved cylinder-head airflow by decreasing valve angle from 20 degrees to 14 and adding larger intake. pontiac 455 Sort by: Featured Items Newest Items Bestselling Alphabetical: A to Z Alphabetical: Z to A Avg. CSI Automotive Sales, Service & Parts. On max CNC porting we can also install up to 2. 12 and a stroke of 3. 1965-75 Pontiac & Tempest engine tune-upspecifications including timing, dwell angle, and spark plug gap, and firing order. Harland Sharp 1. Pontiac Cylinder Head ID Numbers. Manifold has clearance for HEI distributor. The Super Duty engine is designed to meet the severe demands of championship drag racing, road racing, and oval track competition. $2000 is a lot of money to spend on just one engine assembly part,even if they are important. Pontiac 400-455 w/ Edelbrock D-Port Head Bolt Kit. S+J Engines in Washington can get you a strong short block setup, with port and polish, cam, SS valves, for around $2500. Often it isn't visible at first sight either because it may be hidden by r. 500 lb ft of torque is doable. Cylinder Heads. About Contact Parts For Sale. 66: 87: Pressed in studs- D port (B & G Body). Pontiac 1973-1974 Cylinder Heads; No "H" stamp on early 1973 heads. 500 hp will be a challenge for a street engine. Prices for 1971 Pontiac 455 Ho Cylinder Heads of similar quality can greatly vary. They used the HO moniker to counteract the perception of lost performance. Remanufactured Engines Jeep AMC. $1000 or best per engine. M Iron Head. Search Car Torque Specifications by Engine or Model. Find PONTIAC 7. We offer a plethora of Pontiac 455 Heads for your vehicle needs. This is pretty much just an old school trick to raise CR if you find a set for sale or go boneyard picking,and have a stockish 455. Here at Andy's Auto Sport we have an excellent selection of Pontiac Firebird cylinder heads for you to select from. 5 L) engine, and the final year of any 455 HO engine or package. The Pontiac 455 has a bore of 4. These are Fel-Pro head gaskets. Horsepower: Cubic Inches: Trans: Code: Compression: Cam: Heads: Carb: Year: 215: 389: M: 02B: 8. These head numbers represented chamber sizes. Plus, another budget-friendly tech tip. We specialize in making and putting together certain combinations of engines and engine parts that get the utmost power for every dollar spent. Heads with casting dates starting around mid-March 1973 to mid-April 1973usually will have screw-in studs. After years of selling Pontiac parts we have finally put up for sale our collection of distributors listed by application and date code. Bringing the Traditional Pontiac V8 Engine into the 21st Century through modern innovative design and state of the art machining On Site 5 Axis CNC Head and intake Porting Service, we have more CNC porting programs for Pontiac heads and intakes then anyone and we're the first to offer CNC ported OEM iron heads and intakes. Free shipping when your order includes this part. Showing items 1 - 2 of 2 total (Page 1 of 1) Get the latest information from Sonny's: Go. They used the HO moniker to counteract the perception of lost performance. Early Pontiac V-8 Engine Cooling. 1971 99 Pontiac 455 Cylinder Heads - $350 (Pingree Grove) < image 1 of 4 > QR Code Link to This Post. I am rebuilding the motor and need to part with these original parts. For Sale page! Take advantage of the (my) crummy economy as I put up core engine parts. 1976 Pontiac 455 6H Heads Stock heads. 34 results for pontiac 455 heads Save pontiac 455 heads to get e-mail alerts and updates on your eBay Feed. The Pontiac 455 has a bore of 4. Harland Sharp 1. Pontiac heads like the 6X and practically all other production Pontiac heads likely to be used in a performance-orientated build originally had screw in bottleneck studs and steel guideplates. I know there are a few Pontiac faithful on here. Heads create power, so it's important to know the best ones for your Pontiac. The 1970 455 YH block is the 360 HP with 10. The only Pontiac that impressed me more was a 455 SD that had a mild cam that would run 12’s all day in a 74 TA. High Output and Super Duty versions of the 455 were added in succeeding years. The Pontiac brand is part of the General Motors family, and is home to many of the automaker's more performance-oriented vehicles. by George Nenadovich. Shop with confidence. Identify a PONTIAC engine block is very simple, the code is entered, or rather "hit" on the front right of the cylinder block (when you're driving), close to the plane of the cylinder head gasket. 72-74 455 Heads 5. Search Car Torque Specifications by Engine or Model. Jim Hand's 455 The engine that powers Jim Hand's 1971 Pontiac Le Mans Station Wagon (with factory installed GTO appearance Endura front end) into the high 11s in the quarter mile is detailed below. If you are rebuilding a 455 Pontiac and want a stronger rotating assembl. Also in 1973, the new Super Duty 455 engine ("Super Duty" harkening back to Pontiac's Racing Engines) was introduced. Old-school-cool Pontiac performance is alive and well. General Motors produced the Pontiac 455-cubic-inch V-8 engine from 1970 through 1976. My old 455 used 6X-4 heads with 91cc chambers and lived for many years on pump gas with zero issues. Ported heads will obviously flow better than any non-ported heads. Watch this cool video that compares the standard Pontiac 455 and the Pontiac Super Duty 455. Outline • Introduction • Advantages of Head Porting. Pontiac fanned the flames with a black-and-gold Trans Am and SD-455 show car, while participation in the Cannonball Runs gave it hip credentials that ad agencies could only dream of. My project car is a '67 Pontiac LeMans with a poncho 350/TH350/3. Two carbs, one intake. Plus, another budget-friendly tech tip. Even a few cc's difference in volume has a significant effect on compression ratio. V8s (except Ram Air V). Terminal. 040 over stock) and provide a final displacement of 464 cubic inches or 7. Getting the pickup tubes out of the pumps and into the new one was not a quick and easy job. They can be modified for ½” head studs. 12 and a stroke of 3. I have talked to a few machinists in lower 48 and it can be repaired. 69 430 Heads 4. 66 with a head cast of #15 on the top of # 3 and 5 exhaust port on the left side of the engine, and on the rt. has laid down the quickest NHRA Super Stock pure Pontiac powered pass in history. #1 Maintenance FREE Serpentine Kits,Pulley & Brackets, Billet AC, Rods, Brackets and Accessories for American car models. Turns over smoothly. The 455 has only two modest weaknesses. Early Pontiac V-8 Engine Cooling. Nothing really special about them. Pontiac V8 Cyl Head Info This Cyl Head information was gathered from MANY sources including the Pete McCarthyBooks, HO Racing Books, Q&A on www. Mozilla Firefox, Google Chrome And Internet Explorer All Have A Built In Search Function. Good port jobs, however, are EXPENSIVE. 660" exhaust valves. This gasket comes as a set and has a 4. Super Duty 455's used Pontiac's legendary round port cylinder heads while the non Super Duty used standard D-port heads. if anyone has info on this thanks in advance. All 421/428/455 blocks have a "TRANSFER LUG" cast into the block near the distributor hole. 1976 Pontiac Trans Am 455 Heads Casting Number - 6H Buyer must pay shipping. Fastest True Pontiac Power Trash Or Be Trashed Fastest True Pontiac Power - Page 3 - Yellow Bullet Forums Yellow Bullet Forums > Fire your bullets!!! > Trash Or Be Trashed. These have screw in studs and provides the right compression ratio for either a 400 or 455 on todays gas. How to Install and Degree a Pontiac Camshaft (326-455) No comments. Plus you have big and small combustion chambers. Get your Pontiac 455 Heads!. Find Pontiac 455 in Canada | Visit Kijiji Classifieds to buy, sell, or trade almost anything! New and used items, cars, real estate, jobs, services, vacation rentals and more virtually anywhere in Alberta. 68 exhaust valves. #s matching 455 engine, heads, carb, intake manifold, transmission, and rear end. Though most Pontiac heads share basic characteristics with each other, knowing which are the best may still be confusing because Pontiac's head foundry only produced each specific head casting for one or two years. I know Pontiac engines have interchangeable parts but I want to see what parts can actually be interchanged, or if I should go another route and use new parts. I know there are a few Pontiac faithful on here. Outline • Introduction • Advantages of Head Porting. Edelbrock Performer RPM heads produce outstanding horsepower with excellent low speed torque and throttle response. Pontiac 455 / 468 Stroker Kit, Eagle 4340 Forged Steel Crankshaft 4. This means the later 98cc #4X or the '76/79 6X heads could be a viable substitute for the '71 #96 or the '72 #7K3. Has spent the last 20 years in Colorado. 1972 455 Pontiac motor 1970 455 HO Heads #64 1970 455 HO Heads #64. In the mid-1960s, there were 8 separate families of GM V8 engines on sale in the USA. The 1973 Pontiac Firebird Trans Am SD-455 - abbreviated as Pontiac T/A '73 - is a muscle car by Pontiac that first appears in Forza Motorsport 2 as part of the December Car Pack and as standard in all subsequent main series titles as well as Forza Motorsport 6: Apex, although it does not appear in Forza Horizon. 25" The deck height is the same on all Pontiac cylinder blocks- 10. General Information. How to Pick the Best Pontiac 400 or 455 Block for a Modern Performance Rebuild. Same can be said about the 1974 Trans Am SD-455 it was the perfect beautiful melody of styling and horsepower that even today never grows old. Pontiac just used different head codes depending on models they went in that year. They are not guaranteed, but we will take them back within 14 calendar days of the delivery date if there is a problem or they are no longer desired. They feature the standard Pontiac exhaust arrangement; Saving you lots of money not having to buy a set of round port headers. 1970 Pontiac Firebird with a very rare " 455 SD Engine " Block # Y8. How to Pick the Best Pontiac 400 or 455 Block for a Modern Performance Rebuild. 5" high followed by the casting number. Read on as we take out our two-bolt 455 block engine out from out 1973 Pontiac Bonneville wagon and build up it's horsepower. The Pontiac 455 has a bore of 4. 1971 Pontiac GTO 455 7M5 Heads, 485912 Intake, (Rochester 4 bbl Carburetor-SOLD), Exhaust manifolds 480602, and 9798032, Distributor including wire set with chrome loom, and chrome valve covers. side on top of the exhaust port of # 4 & 6. **CELEBRATING 10 YEARS IN BUSINESS!** ONE OF THE COUNTRIES LEADING PONTIAC ENGINE BUILDERS - OVER 30 YEARS EXPERIENCE - specializing in concourse stock RAIV SD455 455HO 421, 389, 400's to all out blown alcohol race engines and everything in-between!!. Ported heads will obviously flow better than any non-ported heads. 1973 Pontiac Formula 455 SD for sale. It is entirely reasonable to see the Pontiac 400 being proposed as a California-only alternative to the 455. All modern production engines, and most aftermarket Pontiac cylinder heads, feature a fast-burn combustion chamber, which is easiest identified by its distinct heart-shaped appearance. In the mid-1960s, there were 8 separate families of GM V8 engines on sale in the USA. Free shipping when your order includes this part. 15 and a stroke of 4. 455 Head Gaskets - Update 4/21/2013 Blueprinting Pontiac 455; Pt 10 CC'ing. Tech: Pontiac Engines. 7cc for head gasket, 2cc ring area, and 7. Pontiac heads are known to vary from the published factory specs to begin with, and also you never know whether a set of used heads might have been milled in the past. "455" stamping on drivers side front of engine, click picture for larger image Photo courtesy of Rob Conrads. We offer a plethora of Pontiac 455 Cylinder Heads for your vehicle needs. Pontiac 400, 428, & 455ci V8 4. 042" (crushed) head gasket, 6 cc valve reliefs for 400 stock pistons, 5 cc for -. Technical Information Pontiac Cylinder Head ID Numbers: Year Application Casting Valves 455 2bbl/4bbl: 15: 1. #400 bored. 190 intake valves and 1. Pontiac 455 Edelbrock, Butler & Kauffman Wide Port This 9028 set is specifically designed for the Pontiac Edelbrock, Butler and Kauffman Wide Port 455 Head T&D always recommends measuring for the amount of offset required for your combination. I am selling Pontiac 350-400-455 cylinder heads from the 60s and 70s. Ported heads will obviously flow better than any non-ported heads. Manifold has clearance for HEI distributor. Semi-synthetic have minute polymers inside them that lower engine weathering and assist shield the engine from cool damages and also cold-starts. 6: 111: 543796: 2: 64: 215: 389: M: 02B: 8. Good price for these heads if they are in good shape and built properly. 65's are actually 1. It may take a few seconds to load. 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-Port 1. The heads were the more desireable 6x-8 with the smaller combustion chambers than the 6x-4 head on the "standard" 400 of earlier years. 71 455 all 4bbl. Original Pontiac cylinder heads contain a wedge-type combustion chamber that’s fully machined for a clean, consistent burn. I would port my stock heads if they are pontiac and in good condition. Stock Pontiac Head Specs * During my searching for information, I found quite a few discrepancies in the sources I was viewing. Pontiac 287-455 Ultra-Action Roller Camshaft (275R) Extensive cylinder head modification, bigger valves, lightweight valve train, titanium valves, maximum flow. The BoxWrench Engine Specs Database is a community resource for mechanics of all skill levels to access a reference library of Firing Orders, Distributor Rotation Directions and Block-Cylinder Numbering as well as Torque Specs, Timing Settings and Cylinder Head Tightening Sequences among other engine specs. If that's a heads up race engine or your standard street rebuild, we take it to the max. 040 over stock) and provide a final displacement of 464 cubic inches or 7. 1 kgm) at 2700. PontiacRegistry. Pontiac fanned the flames with a black-and-gold Trans Am and SD-455 show car, while participation in the Cannonball Runs gave it hip credentials that ad agencies could only dream of. The Pontiac 455 has a bore of 4. To Search Our Page Using This Function Press Ctrl + F. The above figures assume 10 cc for. Big block Pontiac crate engines are also available in 428, and 455 versions. Stock Pontiac Head Specs * During my searching for information, I found quite a few discrepancies in the sources I was viewing. more ads by this user. Including a 455 Pontiac. Compression Calculator My thanks to Lee for the concept and research. By Larry Gorden December 2007. 00 454 Motor Home Exhaust Manifolds 50. 1970 Pontiac Firebird with a very rare " 455 SD Engine " Block # Y8. Often it isn't visible at first sight either because it may be hidden by r. Good price for these heads if they are in good shape and built properly. com, and all associated graphics, logos, page headers, button icons, scripts, and service names are trademarks, registered trademarks or trade dress of the Barrett-Jackson Auction Company, LLC or its affiliates. January 2, 2010 Engine. on the head there is chamber above which appear … read more. We have these forged piston sets available in a wide range of sizes including standard bore and many popular oversizes. Pontiac 400-455 w/ Edelbrock D-Port Head Bolt Kit. Pontiac spent a lot of money engineering the heads and they flow good,the only benefit for aluminum is a slight weight savings. These are 400 455 Pontiac heads. 1978 400 with 6x #4 heads bored. A Pontiac SD 421 came with forged steel rods and crankshafts for extra durability. The 455 HO is a bored out version of the Pontiac 400 HO. Are you searching for Pontiac 455 Cylinder Heads online? Locate Pontiac 455 Cylinder Heads on sale below with the biggest selection of Pontiac 455 Cylinder Heads anywhere online. Early Pontiac V-8 Engine Cooling. The engine that the local Chevy guys really hate is my 9. Pontiac engines were last produced and used in 1981. Getting the pickup tubes out of the pumps and into the new one was not a quick and easy job. Pontiac improved cylinder-head airflow by decreasing valve angle from 20 degrees to 14 and adding larger intake. pontiac 99 cylinder heads gto 98cc 389 400 428 455 firebird lemans te - $150 (san bruno) here are a nice pair of 99 pontiac heads that were blasted,clean & mag. These cylinder heads are designed for outstanding performance gains in 1962-79 389-455ci Pontiac engines. These are hard to find in -8 AN Aluminum. You must use pistons with the valve clearance notches in the correct place for the heads you are using. please !!! ( GOOGLE Pontiac 455 SD. 200" bore size, 0. You can click the thumbnail image next to each description to see an enlarged view. They were designed for use on the Super Duty 455 engines and have the best ports of any Pontiac heads ever produced except the 'still-born' Ram Air V tunnel-port. The heads are 1966 421 (092 castings) with 1. 5" high followed by the casting number. Another high end Pontiac engine built by Spotts Performance. please enjoy Trans Am 455 H.