Pontiac 400 Heads

Find PONTIAC 6. The difference in value of a RA is in the heads and manifolds, so unless your buyer is a numbers-matching fanatic you can turn any Pontiac 400 into a Ram Air with parts. Over 6,000 Automotive Torque Specs. All the above information was taken from Pete McCarthy's "Pontiac Musclecar. Pair #531395 Heads $400. High Quality collection of Pontiac 400 Cylinder Heads at reasonable prices. 77 valves614 and 722 are both round port heads, which have round exhaust ports, they are the best flowing pontiac head out there. Muscle car engines were all produced with an advertised ratio of at least 10. This head will be available with initial flow numbers around 330 cfm! All heads will have CNC chambers and will be capable of flowing 400 cfm. The Pontiac specifications for both duration and lobe placement should be used as the starting point for cam selections in both street and street/strip cars. They feature the standard Pontiac exhaust arrangement; Saving you lots of money not having to buy a set of round port headers. Has Lunati hydraulic cam with 245/255 duration @. This head is available with initial flow numbers around 260 cfm! This heads comes as cast with a 65cc chamber, 74 and 85cc CNC'd chambers are available. the pontiac w72 400 engine. If you have access to the heads from the original 1967 engine that came in the Goat, they would be ideal. Notice how close the Stage 1 valves and they almost touch, you can barely fit a dime between them. The RA IV has round port heads and the RA III has D port Heads. For 400/389's, expect to turn your smaller engine just above 6,200 rpm. 11 intake valve 1. 550" lift, expect to turn it 5,500rpm. Pontiac 400 Heads On 389 Block. The 1955-up Pontiac V8 was an overhead valve engine with cast iron cylinder heads and block and wedge-shaped combustion chambers. Looks to have never been apart. Also, a rear spoiler was NEVER an option on a Firebird or Firebird 400. Known primarily for exhaust headers, engine mounts, carburetor spacers and adapters, and chrome and aluminum customizing accessories, these two pioneering companies have 1000's of components to help your GM, Ford or MOPAR car or truck run stronger and look cooler. A '69 400 manifold #9794234. The other remedy would be to go with aftermarket aluminum Pontiac design heads from Edelbrock, Wenzler, or kauffman. Pontiac - 400 motor YZ - show contact info Firebird Crane, hydraulic cam, performer intake, 30 over trw forged pistons, standard crank, new heads (everything in heads new with hardened seats, new rings, new bearings, cam, rods, main). ** Use sheet stainless steel block off plate. All engines can be custom painted to match your vehicle at your request. I also have a 350 from a 74 GTO. Numbers on the crank are often the same as the part number, but not always. 6 (W72 Performance Package) engine used different heads than the base 6. I was disappointed that it was just a basic rebuild, but at least they did one of a 400 Pontiac. Most Pontiac nuts just go with the edelbrock casts, which you will make more power with, but the cost is around 1100$. Pontiac 400 428 455 Engine Codes. These heads are shipped UPS shrinkwrapped and sprayfoamed into dimensional lumber crates. 11 intake valve 1. No matter what you're driving, we have the right Pontiac 400 Heads for your automobile. -j314,there is a water port in the top middle of each head. 5 to 1 68 400 heads. Pontiac guys treat the 350 like Chevy guys treat the 305 - like it's a waste of time and money to do any performance upgrades to them. Friend recent purchased a 1972 pontiac firebiard that started life as an espirit, but somewhere down the road acquired a pontiac 400. The 400 automatics perform well with the 068 and 1. 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. Can you give me the low down? So far, it seems that the 350 has a smaller bore, but the 400 and 455 share the same bores, but different strokes. Works well with large displacement stroker engines. Includes 4340 forged steel 4. com, I have recently received a 541 CID short block from Butler. We will EXCEED or MEET any advertised price on AFR heads! PONTIAC 400-455 COMPETITION ROTATING ASSEMBLIES. This Engine is going in my chevette. Pontiac 400 cylinder heads - $500 (buffalo) < image 1 of 1 > 3852 delaware ave QR Code Link to This Post. We stock a massive inventory of production Pontiac blocks, heads and crankshafts, to accommodate ALL your stock, street and strip needs. The heads are #15. We will EXCEED or MEET any advertised price on AFR heads! PONTIAC 400-455 COMPETITION ROTATING ASSEMBLIES. They were pulled from a running motor several years ago. Pontiac 400-428, Ram Air & SD 12pt Head Stud Kit. Jade green metallic 1969 GTO with hidden headlights. The 350, 400, and 455 are interchangeable but today most Pontiac enthusiasts want the 455 with aluminum cylinder heads. Since Pontiac stopped making cars in October, 2010, it is getting increasingly difficult to purchase new Pontiac parts. How to Pick the Best Pontiac 400 or 455 Block for a Modern Performance Rebuild. Pontiac took the Buick turbo-charged 3. It becomes imperative then to know how to identify Pontiac heads in order to pick the right one for your engine. The engines were coded with many numbers and letters. They would both need to be run through the machine shop and on one set couple of exhaust bolts need. I pulled the intake to get it powder coated and re-installed itI noticed a port right in the center of each head that was not getting covered by the intake when I re-installed itI looked at it and figured it was just a empty casting hole and did not go anywherewell, I was wrongafter I get it back. 5:1 rockers. High Performance Pontiac Engine Parts for Traditional Pontiac V8 Applications. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. 5 DEGREE BRODIX PONTIAC HEADS FOR MARINE APPLICATIONS. " the #061, used on grocery getter 400s in 1967. Butler Performance is the main source for stock and performance cylinder heads for your Pontiac. How hard to get 400 hp out of a 400 pontiac engine Here's the basic recipe for a 400-hp 400: 1. 70 400 gto gp head stamp location on pontiac heads. By mid-year 1968, a new option called the Ram Air II would debut, with newly designed high flow "round port" (on the exhaust side) cylinder heads. QR Code Link to This Post. In 1973 Pontiac started stamping extra numbers (1/4" tall) on their heads. 1st photo places where codes are usually found in a 400-455 engines 2nd photo 403-455 olds engines (1)400 engine (2)403 engine. This was not the case, and an identity crisis ensued. Pontiac 400 (408) 425 HP Four Bolt, #16 Heads Blueprinted, Dyno Run, Street Ready DP-BAX 425HP-Pont MAY08 Description This is a 1970 Pontiac 400 4 bolt main block and caps built as a 1970 front. 6L/400 Cylinder Heads and get Free Shipping on Orders Over $99 at Summit Racing!. The Pontiac Firebird is an American automobile built by Pontiac from the 1967 to the 2002 model years. 650 exhaust. This included being bored, honed, cleaned, new cam bearings, pistons, rings, rod and main bearings. The 6X head was installed on the 350, 400 and 455 Engines during the mid to late 70's ; The Boss Stamping to determine the cc's of the 6X heads are as follows: A # 4 is 91 cc's (Installed on both 350's and 400's) A # 8 is 98/101 cc's (400) A # 11 is 114 cc's (455) As far as I have seen all these heads came with 2. They are usually stamped on the machined pads by the valve covers. Pontiac 400 head bolt torque sequence? Torque sequence is: 7 3 1 5 9 8 4 2 6 10 Make sure all bolt threads and threads in the block are clean and lubricated lightly with oil. I Have a Pontiac 400 block im going to start building, stamp code is 481988 (71-74 block) I have a set of 1968 6X-8 heads. The 6X is the better of them though. Look at bore, stroke , rod length etc. We work with the Summit Racing tech department to help you tackle your auto-related conundrums. Over 6,000 Automotive Torque Specs. These are intended to replace factory "bottle neck" screw in studs used in select Pontiac engines. Custom Balanced race kits CNC-Motorsports. The heads are #15. firebird 400 engine. ( 416 casting) 58CC combustion chambers 1. Pontiac improved cylinder-head airflow by decreasing valve angle from 20 degrees to 14 and adding larger intake. engines with Vortec style intake manifolds. 455 Head Comparison: Regular 455 head, Stage 1 and Stage2 heads. Pontiac 400 Heads. 6 Liter engine was first introduced in 1967. The average cost for a Pontiac Firebird head gasket replacement is between $1,150 and $1,389. 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. Pontiac would offer their first "Ram Air" engine straight from the factory. 12 and a stroke of 3. After doing a little research, I found a pair of 1969 Ram-Air 3 heads (cast #16), which have the large valves and better breathing. com: pontiac 400 cylinder heads. I have sets of 4X, 6X, 7H1, 7M5, 11, 16,. A late production example, it is one of a total of 110 built and one of 98 with the M21 close-ratio 4-speed. No way will 670s run pump gas on a 455 for sure, maybe on a 400 if the slugs are down the hole and you are at a higher altitude in cool air, like Denver. 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. Pontiac Engines, Blocks Cranks & Intakes. Pontiac Exhaust Manifold Identification. 17 total Pontiac Engine Blocks Heads for Sale Ram Air IV III II 400 455 Judge TA: $28,000. Both are great Pontiac heads but they are quite different. To make 500hp with a 455+cid engine with Edelbrock heads and mild cam timing around 230 deg's @. Chrome Front and Rear Bumpers. P) and pontiac 326 ready to go. The head casting number can often be found on top of the center exhaust port. Here is side by side comparison of 1970 455 heads. If your Pontiac has screw in studs with a "necked down" type step stud on the topside, they can be replaced with these 7/16" studs. Technical Information Pontiac 400 428 455 Engine Codes: This is a quick block ID for junk yard hunting, etc. Looks to have never been apart. This is our first aluminum Pontiac head casting that we have brought to the marketplace. 66" 1974 GTO 350 code 46 screw in studs 1. 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. Enjoy your Pontiac hobby at the only 24-7 Pontiac Club that brings you Pontiac News, Pontiac Information, and Pontiac Entertainment at the speed of light. For 400/389's, expect to turn your smaller engine just above 6,200 rpm. (Part #'s 549501 & 490334) $3 9. 400 Pontiac V8 Cylinder Heads in-stock with same-day shipping. However, it appeared to many that the Pontiac 350 engine shared the same head with the standard L-78. heads in the transfer area and re-machine them to get greater compression (this was also often done by brazing on the cast iron heads). All engines can be custom painted to match your vehicle at your request. pontiac 400. They were pulled from a running motor several years ago. This powerplant features overhead valve valve gear, a 90 degree V 8 cylinder layout, and 2 valves per cylinder. pontiac engine decoder year code c/i hp tran carb car misc 1962 13b 421 3 m 2 x 4 full super duty 1962 13u 421 4 m 2 x 4 full super duty 1967 xl 400 255 1967 xm. The engines were coded with many numbers and letters. In some cases it may be located on one of the end exhaust ports. Also if any one has taken this route could you give me an estimation on the cost of undertaking a. (Part #'s 549501 & 490334) $3 9. They were used in the same years that 6X-8 heads were used, but the -4's were used on 350 engines and W72 400's. This is the first D port head on the market to incorporate the latest developments in cylinder head technology into it. We offer pontiac 400 performance engine rebuild kits and master kits and parts with affordable prices at RPM Pontiac 400 Performance Engine Rebuild Kit RPM - RON'S PRECISION MACHINE, INC. Pontiac Engines, Blocks Cranks & Intakes. High Performance Pontiac Engine Parts for Traditional Pontiac V8 Applications. With this combination we can make over 550hp with incredible torque for the dream machine muscle car. The 400 automatics perform well with the 068 and 1. Custom built Pontiac 400 crate engine. It already has 6X Heads, a cam, an edelbrock performer intake, and an edelbrock carb, but there is just not alot of power with it, I would have thought that these mods would have made it Fast, but it isnt. Pontiac also engineered a 366 cid engine to be used in NASCAR, a 400 cid version for use in production GTOs and Firebirds, and a 428 cid version intended for NHRA drag racing. 250 stroker crank, 6. Enjoy your Pontiac hobby at the only 24-7 Pontiac Club that brings you Pontiac News, Pontiac Information, and Pontiac Entertainment at the speed of light. We work with the Summit Racing tech department to help you tackle your auto-related conundrums. Geebjen’s Pontiac head info. Only when the thinnest practical head gasket is used should milling be considered. 00 651-335- eight five three four. Kits for Pontiac 400 applications Now select an engine model (if applicable) -- Pontiac Engine Models -- All Pontiac Kits 151 301 326 350 3800 389 4-cylinder 400 421 428 455 Brodix Heads Edelbrock Heads Iron Duke L67 Pro Stock Dart Heads Pro Stock Heads Ram Air Runner Heads Super Duty Generic V8. Different chamber volumes, some huge for 455 engines and some small for 350 cid. Custom built Pontiac 400 crate engine. Get the best deals on Cylinder Heads & Parts for 1969 Pontiac Firebird when you shop the largest online selection at eBay. -j314,there is a water port in the top middle of each head. 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. In 1967 Pontiac made some open chamber heads 6S-9 400 w/AIR, 101cc 2. These heads were used on the HO 400's and the standard 350 pontiacs and will give you more power due to the fact that there compression chambers are MUCH smaller. Stock Pontiac Head Specs * During my searching for information, I found quite a few discrepancies in the sources I was viewing. Comprised of mulitple embossed layers of stainless steel with the outer layers utilizing a viton rubber coating. New valve springs and valve seals. Heads create power, so it's important to know the best ones for your Pontiac. com for: Pontiac 1000, 6000, Acadian, Bonneville, Fiero, Firebird, Firefly, GTO, Grand AM, Grand Prix, Lemans, Optima. Specifications, Part & Services, Museums & Clubs for Antique, Classic, Vintage and Muscle Cars 1968 Pontiac GTO 400 Ram Air II Series. 7:1, which is a better deal. Not sure which Pontiac Cylinder Head Gasket Spacer Shim to buy? We offer a wide range of Pontiac Cylinder Head Gasket Spacer Shims of all the best brands in the industry at an affordable rate that fits the Price Range you are looking for. The heads are #15. This head is available with initial flow numbers around 260 cfm! This heads comes as cast with a 65cc chamber, 74 and 85cc CNC'd chambers are available. Browse your favorite brands affordable prices free shipping on many items. In time , I am going to redo the 455G. I've never seen a 326 Pontiac built to where it could stand up to a 327 Chevy at the same level of tune. 400 Pontiac; 455 Pontiac; and 421/428 Pontiac In order for a muscle car engine to perform well in today's "real world" environment, the compression ratio must be reduced, usually by 1-1 1/2 points. PontiacRegistry. This page will help you identify the year and size of your Pontiac engine. there are two more #s ,one on each head. If you have questions please direct them to the Q & A. Kits for Pontiac 400 applications Now select an engine model (if applicable) -- Pontiac Engine Models -- All Pontiac Kits 151 301 326 350 3800 389 4-cylinder 400 421 428 455 Brodix Heads Edelbrock Heads Iron Duke L67 Pro Stock Dart Heads Pro Stock Heads Ram Air Runner Heads Super Duty Generic V8. Pontiac Cylinder Head ID Numbers. Pontiac engines were last produced and used in 1981. Performer Pontiac heads are designed for 1962-79 389, 400, 421, 428 and 455 cid V8 Pontiac engines with a 4. DCI 400-455 is DCI's most popular crate engine. Edelbrock is the most respected name in performance. Here are some ways of finding out and changing your compression ratio on Pontiac V8 engines. I caught that espisode too and thought at first it was going to be a real build up. The 6X-4 heads aren't any older heads than 6X-8 heads, if that's what you mean. I have sets of 4X, 6X, 7H1, 7M5, 11, 46, 47, 66, 98, and 143. Technical Information Pontiac Cylinder Head ID Numbers: Year Application Casting Valves CC or CR Notes; 1967: 400 2bbl/4bbl: 061: 2. Search By Pontiac Cylinder Head Codes Pontiac made closed chambered heads until 1967. The casting code will help determine what the block is. They are cometic head gaskets, but that thick of a gasket can cause other issues. There are D-port heads and round port heads. A third 400 engine variation bowed for '68 and was the best blend of machismo and manners. It is a 290 hp 400. These are intended to replace factory "bottle neck" screw in studs used in select Pontiac engines. 70 400 gto gp head stamp location on pontiac heads. Some guys. the intake does not cover all of this port the gasket set [two diffrent gaskets for the intake] , & neither set will cover this port. I’m convinced that this head was the prototype for the later production open chamber heads, but the Pontiac engineers learned something on this head that they incorporated into all of the round port performance heads of the RA-II, IV, HO, and SD-455 heads. 00 SMI - STAGE TWO - (800 CFM) ROCHESTER QUADRAJET For use on Moderately Modified 350-400-455 engines with: Aftermarket Cam, 8. They were used in the same years that 6X-8 heads were used, but the -4's were used on 350 engines and W72 400's. The third generation Pontiac Firebird was introduced in late 1981 by Pontiac alongside its corporate cousin, the Chevrolet Camaro for the 1982 model year. We've only had two Pontiac V8s in Lemons, at least that I can remember, and both (a 301 and a 400) held together pretty well. pontiac engine decoder year code c/i hp tran carb car misc 1962 13b 421 3 m 2 x 4 full super duty 1962 13u 421 4 m 2 x 4 full super duty 1967 xl 400 255 1967 xm. Dennis "D-Thief" McDonalds' '64 GTO has won every Pontiac match race entered and nearly a hundred bracket race rounds. It was the first in a long line of high performance Pontiac heads with screw-in studs and stamped steel pushrod guide plates. Mostly 400 and 455 engines. Compression ratio is 10. These heads were used on the HO 400's and the standard 350 pontiacs and will give you more power due to the fact that there compression chambers are MUCH smaller. com: pontiac 400 cylinder heads. It already has 6X Heads, a cam, an edelbrock performer intake, and an edelbrock carb, but there is just not alot of power with it, I would have thought that these mods would have made it Fast, but it isnt. 5 DEGREE BRODIX PONTIAC HEADS FOR MARINE APPLICATIONS. Can I swap heads from a 74 Pontiac GTO motor (350) to a 400 motor? Howdy. 1965-75 Pontiac & Tempest engine tune-upspecifications including timing, dwell angle, and spark plug gap, and firing order. Some have Cranks and pistons but no heads, i do have heads for each but they are listed separately. Skip navigation Porting Pontiac heads #2 Setting Hydraulic lifters with roller rockers on a 400 Pontiac. currently the things lucky to be running, its got a holley 750 with the choke linkage missing and it really just need to be replaced. That characteristic difference is apparent by looking at the exhaust port openings. Sign me up I need a few ! GM hasn't offered a good Pontiac 400 since 1980 over the counter. The “00” found on this block indicates that it’s a 400. This engine was used mainly in the firebirds and was offered as a turbo as well. Below are some popular heads and chamber sizes (always be sure to have yours checked before any milling). This head is available with initial flow numbers around 260 cfm! This heads comes as cast with a 65cc chamber, 74 and 85cc CNC'd chambers are available. The Pontiac V8 shared some design features with the Chevrolet small-block V8, but was overall a unique design, distinct from Buick, Chevrolet, or Oldsmobile engines. This version of the Pontiac V8 engine was used in the GTO, Firebird, and the Trans-Am Firebird. See our Cylinder Heads - Quality Performance Aluminum Street Heads. Steve Petro’s 436-inch “400” produced more than double the horsepower and torque on the Pierce Race Engine’s DTS Dyno than it originally did when Pontiac screwed it together in ’77 for Steve’s Trans Am. 6 litre - Duration: Proformance Unlimited's 69 Pontiac GTO 400 Crate Engine Dyno Run Aussie Heads and Race Engines 34,240 views. I am going to run a ram air IV cam, aluminium intake and headers. If you've ever thought about "stepping it up a notch", now's the time. Blower Drive Service : PONTIAC POLISHED BLOWER KITS - Blowers & Blower Parts Fuel Lines & Linkages Drive Kit Components BLOWER MANIFOLDS Fuel Injection Blower Drive Kits Timing Accessories & Belt Guards Blower Kit Systems Scoop & Air Filters BDS Apparel Uncategorized ecommerce, open source, shop, online shopping. If your Pontiac has screw in studs with a "necked down" type step stud on the topside, they can be replaced with these 7/16" studs. i am building a pontiac 400. Enjoy your Pontiac hobby at the only 24-7 Pontiac Club that brings you Pontiac News, Pontiac Information, and Pontiac Entertainment at the speed of light. Chamber volume for the 400 head was approximately 98 cc, while the 455 head held approximately 114 cc. Pontiac 400-428, Ram Air & SD 12pt Head Stud Kit. 5 to 1 68 400 heads. View Details. I have a street rod with a Pontiac 400 1975 modelthe heads are marked 6X. Shop for Pontiac 400 today!. vintage pontiac chieftains minister delux tin plate friction car, automobilia minister delux pontiac chieftains tin plate friction car. This kit is intended for internal balance. 6 55-60 INT MAN 538177 61-62 389 62 D-Port 1. Pontiac Crankshaft Part NumbersTechnical NotesPre-1964 cranks must be machined to fit Turbo Hydromantic torque converters. ( 416 casting) 58CC combustion chambers 1. 1965-75 Pontiac & Tempest engine tune-upspecifications including timing, dwell angle, and spark plug gap, and firing order. True Pontiac engines were made by the Pontiac Motor Division. This website is used for info on 70-81 Trans Am's and Pontiacs. A third 400 engine variation bowed for '68 and was the best blend of machismo and manners. 090" Length 2. Running them on a 400 engine will require octane levels that are not available today except in racing gas form. I have sets of 4X, 6X, 7H1, 7M5, 11, 16,. Have the crank turned and put it back together and put it back in. Edelbrock is the most respected name in performance. The 400 automatics perform well with the 068 and 1. I have a set of the large valve #16 heads with screw in studs and guide plates. i am building a pontiac 400. I need some cam grind advice for my motor in the '40 Plymouth gasser, here's what I'm working with'76 Pontiac 400, 6X heads, Weiand 4bbl intake, Holley 4150 600cfm carb, fenderwell headers, stock points ignition, stock fuel pump and compression, stock TH350 trans and converter, 3. I have 15 Pontiac blocks listed below. Custom Balanced race kits CNC-Motorsports. firebird 400 engine. Compression Ratio and The Pontiac Engine. I am selling Pontiac 350-400-455 cylinder heads from the 60s and 70s. Gm Pontiac 400 455ci Cylinder Head. GM FoMoCo Pontiac 400 428 455 Engine Casting Numbers;. Find great deals on eBay for pontiac 400 heads and pontiac 455 heads. Sign me up I need a few ! GM hasn't offered a good Pontiac 400 since 1980 over the counter. Firebird 400 “The Boss”. View Details. Pontiac guys treat the 350 like Chevy guys treat the 305 - like it's a waste of time and money to do any performance upgrades to them. or call: 414-764-4586. The 400 automatics perform well with the 068 and 1. Most want the smaller chamber for the 400 for a good CR. com, the ALL Pontiac Club for ALL Pontiac Lovers– dedicated to the preservation, restoration, and enjoyment of all years, models, and types of Pontiacs. Hello, Frank & Bob (AllPontiac), Just wanted to send you my personal thanks for your help and assistance, for my 505 IA (2) and the Tiger heads, which once put together became an awesome combination and more than I expected. ” the #061, used on grocery getter 400s in 1967. Pontiac formula 400 used cars. The head gasket Pontiac used for its V-8 was a composition construction consisting of a coated steel core. The other remedy would be to go with aftermarket aluminum Pontiac design heads from Edelbrock, Wenzler, or kauffman. I would like to get 500+ hp out of my stock pontiac 400 (67 firebird). Nothing fancy, I just like the lopey idle it makes. Engine parts 1968 Pontiac 400 Cylinder heads Intake Valve covers Too many to list. Complete numbers. The Ram Air III was available with the 1969-1970 Pontiac GTO , 1969 Firebird, and 1970 Pontiac Firebird Formula when RPO code L74 was selected on the order sheet. Pontiac Heads - Classifieds: 1976 Pontiac 400 6X heads in Davenport, Pontiac Cyl heads Rally two in Quincy, 1972 Pontiac V8 4bbl cylinder in Kalamazoo, FORD CHEVY PONTIAC HEADS 390 in Elkton, Pontiac parts aluminum heads headers in Salt Lake City. The 350, 400, and 455 are interchangeable but today most Pontiac enthusiasts want the 455 with aluminum cylinder heads. Shop the Best Pontiac 400-455-461-488 rotating assembly kits & Forged stroker kits for street or race. Pontiac Crate Engines. mill , and put that in it. Pontiac built the Ram Air versions in a total of five different stages. Search Car Torque Specifications by Engine or Model. With some forged internals, a nice bump stick and general Pontiac machine work should I be able to run pump gas and make 500hp? Should I do some elaborate porting on the 6X. We are pleased to introduce to you, our aluminum D-port Pontiac head. 6L/400 Cylinder Heads with Aluminum Cylinder Head Material and get Free Shipping on Orders Over $99 at Summit Racing!. For 400/389's, expect to turn your smaller engine just above 6,200 rpm. 30 over with flat top forged pistons Sealed Power. If one obtains these 670 heads, and opens the chambers ala the 1968 and later 400-428 heads, and adds the good valve prings, you will have as good a high compression head as is possible to find. DCI 400-455 is DCI's most popular crate engine. The 400 automatics perform well with the 068 and 1. I have a street rod with a Pontiac 400 1975 modelthe heads are marked 6X. 6 Litre Pontiac motor. There are D-port heads and round port heads. Machining in the area would cost 225 for Valve Job. The 400 was inspired by the Pontiac 389 V8 and proved to be the last Pontiac engine with closed chambered heads. This is our first aluminum Pontiac head casting that we have brought to the marketplace. Many companies produced stock-replacement Pontiac head gaskets over the years, but few were as good those originally supplied by Pontiac. Both are great Pontiac heads but they are quite different. Stock Pontiac Head Specs * During my searching for information, I found quite a few discrepancies in the sources I was viewing. Cometic Gaskets C5711-040 Cylinder Head Gasket Pontiac 400/428/455 Bore: 4. Pontiac 400 428 455 Engine Codes. SCAT Rotating Assembly Kits - Pontiac 400-455 - Forged Crank (Series 4340) - (461CI, 488CI) Hover (or touch) to zoom. appears to be original bore - see details. Like all PONTIAC engines since 1955, the firing order sets is: 1-8-4-3-6-5-7-2, all by turning it counterclockwise. heads in the transfer area and re-machine them to get greater compression (this was also often done by brazing on the cast iron heads). 155" Bore, 4. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. View Details. They feature the standard Pontiac exhaust arrangement; Saving you lots of money not having to buy a set of round port headers. Furthermore, intake valve diameter was reduced from 2. Find PONTIAC 6. In 1967, Pontiac relocated the valve centerline in the cylinder heads to allow bigger valves and better breathing. Performer heads #60579/60575 are 50-state emissions legal for 1965-79 vehicles. Our Unique Line of Performance Parts for the Traditional Pontiac V8 Engine. Pontiac 400 (408) 425 HP Four Bolt, #16 Heads Blueprinted, Dyno Run, Street Ready DP-BAX 425HP-Pont MAY08 Description This is a 1970 Pontiac 400 4 bolt main block and caps built as a 1970 front. The engine has been completely re manufactured. Pontiac 400 with 375 HP engine package with cast iron heads can be custom designed to your specific needs. But near me Labor is little higher. The heads are #15. 5 DEGREE BRODIX PONTIAC HEADS FOR MARINE APPLICATIONS. View Details. Our extensive research and product development, which ranges from street engines to some of the highest horsepower Pontiac race engines in the country, h. By 1969, the entire Musclecar market had become saturated with "Ram Air". Easy to use parts catalog. Pontiac engines are misunderstood somtimes. This is the first D port head on the market to incorporate the latest developments in cylinder head technology into it. Pontiac heads - $300 (Hshds) < image 1 of 1 > QR Code Link to This Post. I’m convinced that this head was the prototype for the later production open chamber heads, but the Pontiac engineers learned something on this head that they incorporated into all of the round port performance heads of the RA-II, IV, HO, and SD-455 heads. Pair #531395 Heads $400. Furthermore, intake valve diameter was reduced from 2.