The radiator and stock A\C condenser needs to be removed in order to do the cam swap. Cylinder Head Gasket 1961-1980 Edelbrock 7381 Cylinder Head Gasket, Pontiac 389,400,421,428,455 made by Edelbrock, for as low as $39. Block Casting: Original 389 block or equivalent 389 or 400 replacement. Labor costs are estimated between $702 and $887 while parts are priced between $381 and $400. 300 SBC Iron sets available World Products, OEM, Vortec Bow tie. SMI - STAGE TWO - (800 CFM) ROCHESTER QUADRAJET. Engine Blocks Pontiac 400. Both racing and muscle car enthusiasts can also make significant horsepower gains by selecting a pair of the many aftermarket Pontiac performance heads that are available today. Selecting a Hydraulic Cam for your Pontiac Engine. P4 P5 P6 Pontiac Sheet Metal Intake Manifolds. Re: Pontiac 400 cam in a 350 September 20th, 2016, 04:16 AM 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. On a Pontiac engine the compression ratio's were change by using different heads. It has since been upgraded by ARC Race Cars in New Oxford PA with a chrome moly roll cage, chrome Strange Strut Front end, double frame rail and 9″ rear, NHRA certified to 7. I knocked the upper rod bearings out of a 400 on 93 with an octane booster, so I found out first hand what. They are cometic head gaskets, but that thick of a gasket can cause other issues. There are D-port heads and round port heads. do NOT contact me with unsolicited services or offers. or call: 414-764-4586. it depends on how much hp you want. 11 intake valve 1. About Contact Parts For Sale. pontiac 389ci or 400ci small block with the whole edelbrock performer package (cams,lifters,heads,)but with dual holley 4barrels and a weiland blower. Browse your favorite brands affordable prices free shipping on many items. BTW, if onovakind67 is reading, that 400 was built using the Chevy 509 block we got off you a few years back. Cylinder Heads Pontiac big valve 7K3 500 BBC Oval port. Shop the Best Pontiac 400-455-461-488 rotating assembly kits & Forged stroker kits for street or race. A set of 1974 400 2-barrel heads won't flow as well as 1969 400 4-barrel heads from a GTO. Cranks is wrapped and greased. Cylinders bored. pontiac 400 short blocks - $400 (woodlands) ( crank, rods and pistons, no heads are included ) cores ( that means they will need to be rebuilt ). Labor costs are estimated between $704 and $888 while parts are priced between $482 and $513. 70 400 gto gp head stamp location on pontiac heads. Pontiac Performance Parts by LARRY WENZLER Pontiac Performance Parts at reasonable prices Just click on any of the items below for more PONTIAC PARTS info. Sorry this page is a little long. With modern, high-flowing Pontiac heads finally available, big-inch Pontiac motors are no longer just head-limited torque monsters-they have the potential to make big power numbers, too. This is the first D port head on the market to incorporate the latest developments in cylinder head technology into it. Dave's Classic Cars, Dave, and/or the creator of this web site, are not responsible for any mistakes, or incorrect information contained on this web site. Look at bore, stroke , rod length etc. Fits '65-'79 326, 350, 389, 400,. Kauffman Aluminum D Port Pontiac Cylinder Head admin 2017-03-28T13:59:49-04:00 The KRE Aluminum D port Pontiac cylinder head has been on the market since 2004. Since Pontiac offered the 400 2-barrel, the 400 4-barrel with both manual and automatic transmissions, and the 455. It was the first in a long line of high performance Pontiac heads with screw-in studs and stamped steel pushrod guide plates. This is a quick block ID for junk yard hunting, etc. is producing to much compression for safely running pump gas. 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. 300 intakes, & 1. Whatever head you choose, you should have them cc'd to determine the exact chamber volume, especially when you shoot for a SCR over 9:1. GET IT SHIPPED Free Auto Shipping Quote: 1967 Pontiac Firebird 400 Convertible Customized. See our Cylinder Heads - Quality Performance Aluminum Street Heads. 045 400 block) 4. Viton-coated outer layers create a superior seal not available with other steel or copper gaskets. Low miles on these and have double springs for 500 lift cam. 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. The 400 in³ (6. This new HIGH PERFORMANCE Pontiac cylinder head will have a 10 degree valve inclination angle and will be able to support a 2. The only 1969 Firebird model to receive a rear spoiler was the 1969 Trans Am, which was a pedestal spoiler. 5", then yes, anymore ONLY 400 cubic inches IS small, and we aren't even discussing the monster stroker engines from Chevy, Ford, and Mopar! Rod length Pontiac designed the 389 to have a tall deck and a long rod. Below are just some of the pump gas builds we have done over the years. Was going to build a 400 but found a 19 65 389 for my GTO project. Dale Earnhardt Jr. Information about PMD heads is still being gathered. 77: 75: Pressed in studs. Join today and help support and build the best of all Pontiac Clubs in the world. Each engine is line bored to assure straightness. 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. Like all PONTIAC engines since 1955, the firing order sets is: 1-8-4-3-6-5-7-2, all by turning it counterclockwise. I have sets of 4X, 6X, 7H1, 7M5, 11, 16,. While these engine versions are very popular, they also have many performance parts available for them which makes them easy to modify and get big horsepower gains. Order the part with stock number in hand. Free Pontiac Parts Catalog 1933 to 1958. ENGINE HEADS: Identifying the 65 400 heads is equally simple. Description NICELY RESTORED FORMULA, 400 V8, 4 SPEED MANUAL, PWR STEER / PWR FRNT DISC! Proudly wearing its original colors both inside and out and propelled by a period correct engine beneath its hood that's running strong, this 1970 Pontiac Firebird Formula 400 is one seriously sharp looking classic muscle car. Powertrain Products, Inc is the nation's leader in providing remanufactured and rebuilt engines for cars and trucks. After years of selling Pontiac parts we have finally put up for sale our collection of distributors listed by application and date code. In addition, California and high altitude cars received the Olds 403 engine, which offered a slightly higher compression ratio and a more usable torque band than the Pontiac engines of 1977. do NOT contact me with unsolicited services or offers. They have anything and everything that's available for the early Pontiac V-8. Surface rust but will clean up nicely. The Ram Air III just like the GTO's base 400 had D-port heads. Re: Pontiac 400 cam in a 350 September 20th, 2016, 04:16 AM 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. Pontiac 400 with 375 HP engine package with cast iron heads can be custom designed to your specific needs. I don't know what the compression ratio is on my heads but I do know they have to be lower than 670s. 1969 Pontiac GTO A true muscle car, the GTO could be equipped with a 400-cubic-inch V-8 that generates 350 horses including a fully synched, floor-mounted 3-speed with Hurst shifter, dual exhausts, Quadra-jet carb, stiff suspension, buckets or notch-back front bench seat with fold-down armrest. View and learn more about the professional grade lineup of trucks, SUVs, crossovers, and vans. 1965-75 Pontiac & Tempest engine tune-upspecifications including timing, dwell angle, and spark plug gap, and firing order. Pontiac Cylinder Head ID Numbers. Looking at the chart below, we can see that this is a 1974 Pontiac 400/455 head. These are 93. Head: Part II. These are 98cc heads, they are currently 93cc's these came off of a bad rebuild, they about 1500 miles on them. 1970 Pontiac Firebird Formula 400 Ram Air III - This is a true what you see is exactly what you get collector car. 250 cast Eagle crank and 6. Join today and help support and build the best of all Pontiac Clubs in the world. Pontiac engineered a number of intakes with both single and dual four-barrel carburetor arrangements to make them better suited for their intended use, be it the strip or. They're called D-ports because of the "D" shape of the exhaust ports, which is the part of the head that connects to the exhaust manifold or header. Shop our large selection of parts based on brand, price, description, and location. 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. I would play to the pontiac engines strength, which is torque. Pontiac Performance Parts by LARRY WENZLER Pontiac Performance Parts at reasonable prices Just click on any of the items below for more PONTIAC PARTS info. And despite dropping the tri-power option, you could get a 389 V8 pushing out 360 horsepower. 455 Head Comparison: Regular 455 head, Stage 1 and Stage2 heads. Stock Pontiac Head Flow Head Casting Number: Year: Notes: Porting: Intake Lift: Intake Flow: Exhaust Lift: Exhaust Flow: Download Desktop Dyno 2000. landline - no text 603 four3seven + two/2/two/2. Order the part with stock number in hand. We are pleased to introduce to you, our aluminum D-port Pontiac head. Shop the Best Pontiac 400-455-461-488 rotating assembly kits & Forged stroker kits for street or race. Good price for these heads if they are in good shape and built properly. Pontiac 400 heads, these are 4X-7H heads ready to bolt on. Dave is considered to be among the best Pontiac builders. The cam is unknown,but sounds lumpy. Pontiac engines are misunderstood somtimes. 300 SBC Iron sets available World Products, OEM, Vortec Bow tie. 70 400 ra gto fbird. For cylinder heads manufactured after 3/15/02 bolt kit #350-8549 will be required. 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. HO and Super Duty engines were the most desirable. 90 GTO option package to a $2,556 Pontiac Tempest sport coupe, you got one of the coolest things around. it occurs inside Pontiac cylinder heads. The two-floor Best Western has 57 non-smoking rooms that include cable TVs with HBO, mini-fridges, microwaves, coffeemakers, free Wi-Fi and hairdryers. It offers complete sets containing bolts in the proper lengths required for original Pontiac D-port and round-port cylinder heads as well as the aftermarket Edelbrock offerings. 300 intake valve and a 1. This engine was used mainly in the firebirds and was offered as a turbo as well. GTO is powered by a Date Code Correct 400 and is backed by a Auto trans with His and Her Shifting. what fuel should I run in my 1968 GTO with 400 big block 4bbl? 5 Answers. Block 500557 Code YA used in a 78 Firebird Date I097 6X-8 Heads Date I267 Intake Date I017 Pontiac,Firebird, Formula, TransAm, Tempest, Lemans , GTO, Catalina. 00 Pickup Only. ran good,low miles ,. The 1970 Pontiac line up was composed of the base Firebird with 250 cid six, the mid range, 350 cid Espirit, the 400 cid Formula 400, and the 400 cid Ram Air Trans Am. 500 Horsepower is easy with a 400 pontiac as well, but you definitely need at least 240 cfm of air flow outa the heads, requires extensive porting or aftermarket heads and intake. D-Port heads are the most popular Pontiac heads. 5 hp vacuum cleaner motors), two graduated vertical manometers to measure atmospheric pressure, an incline manometer to measure actual airflow, and a velocity probe. Pontiac 400 heads - posted in General Engine (Non-Gen Specific): With a 400 60 over engine what heads would be the best choice if you are limited to 91 octane pump gas? i would be guessing something with a 2. GTO is powered by a Date Code Correct 400 and is backed by a Auto trans with His and Her Shifting. Bored and honed with deck plate. I've tried all the factory performance grinds RAM AIR cams,HO grinds, not even close. 2 crates at 24x12x10" / 85lbs ea + 1 parcel at 12x12x12" / 20lbs Shipped from Canada Vancouver V5R 4B7. Pontiac V-8 Oil Pan Reinforcement Plates These stainless steel plates help provide even clamping force across the rear corners of the oil pan to secure gasket and prevent leaks. TA Performance and our products are not endorsed, sponsored by, or in any way affiliated with General Motors Corporation and/or the subject vehicle marketing division. Plewa has made some deviations from stock including replacing the steering wheel, wheels and stereo. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads Pontiac/Chevy Aluminum, 91cc. Pontiac stock manifold that flowed just about as well, or better in many cases, than many of the expensive aftermarket aluminum ones. New pistons are now available for your vintage Pontiac V8 engine. Looks to have never been apart. One of the Nations leading Pontiac Parts Dealers. Ever wonder how much you need to mill off your head to make a cc difference in the combustion chamber size. Best ET: 7. See: HPP 4X Head. With modern, high-flowing Pontiac heads finally available, big-inch Pontiac motors are no longer just head-limited torque monsters-they have the potential to make big power numbers, too. Both the 400 and 455 respond well to valve lifts of up to about. 5 hp vacuum cleaner motors), two graduated vertical manometers to measure atmospheric pressure, an incline manometer to measure actual airflow, and a velocity probe. Can a Pontiac 400 with 6X heads setup properly make around 400 HP with good torque for street use with the right compression, good hydraulic flat tappet cam, RPM type intake and 750/800 cfm carb, full length headers and a 2 1/2" full length dual exhaust system?. What Pontiac did was create a new casting number for their 400 engine block and added some nice pieces to improve the engine. 5 DEGREE BRODIX PONTIAC HEADS FOR MARINE APPLICATIONS. heads are in excellent shape, valves and seats touched up and ready to go with a fresh skim on the decks. I HAVE 4X HEADS ON 400 CI PONTIAC ENGINE AND WHERE THE CROSSOVER ON THE INTAKE MANIFOLD FITS IT DOES NOT COVER THE PORT - Answered by a verified Auto Mechanic We use cookies to give you the best possible experience on our website. See: HPP 4X Head. 00 to $4700. Pontiac 400 428 455 Engine Codes. 1967 pontiac genuine firebird 400 - v8 auto - tubular arms - coilovers - restored - entirely rust free! - Up for sale I have a very clean 67 Pontiac Firebird 400. Supercharged and nimble, your Grand Prix is a fast, fun and stylish car you love to drive. Like all PONTIAC engines since 1955, the firing order sets is: 1-8-4-3-6-5-7-2, all by turning it counterclockwise. SD Performance spends an extensive amount of time on the dyno, at the track and on the street to develop some of the best performing Pontiac ported cylinder heads on the market today. 25 intake and a 1. Stroker kits to make them as large as 501 CID are available. & Dale Earnhardt Racing during the 2000 Pontiac Excitement 400 at Richmond International Raceway best. The 400 in³ (6. These Pontiac castings have incorporated the heart shape combustion chambers and spread port design intake runners. 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. Use a 400 head gasket as a template to mark the heads and Drill the 3 holes on the intake side using a 3/16 drill bit at a 10 degree angle towards the exhaust side of the head. A set of Nitemare Performance custom-ported Pontiac cylinder heads will get your more flow for less dough. 045 400 block) 4. which alum head kre or edelbrock? On a different post I talked about my 455 flat top piston running #62 heads, comp xe284h with 1. The 400 block is considered the "best", particularly those made for the '70-'75 model years. Only a true car racer/guy could understand. The 455 cylinder heads will have larger combustion chambers than the same year 400. My brother built a stroker 400 for his 68 GTO Conv. 463 CID KB forged flat top 4. Nice set of rebuildable 1973 Pontiac Firebird Trans Am 400 4x heads. 5 DEGREE BRODIX PONTIAC HEADS FOR MARINE APPLICATIONS. car and driver save 79% subscribe give a gift visit the website customer service. One 71 GTO Motor out of car Not running ONE 1970 SHORT BLOCK with pistons rods crank with main caps. Our extensive research and product development, which ranges from street engines to some of the highest horsepower Pontiac race engines in the country, h. 4x-3 head code 2. The 350, 400, and 455 are interchangeable but today most Pontiac enthusiasts want the 455 with aluminum cylinder heads. You must use pistons with the valve clearance notches in the correct place for the heads you are using. These have screw in studs and provides the right compression ratio for either a 400 or 455 on todays gas. 15 bore x 4. bring back the power. It's a 2 or 3 letter code on the block right in front of the passenger side cylinder head. Below are just some of the pump gas builds we have done over the years. Butler Performance is the main source for stock and performance cylinder heads for your Pontiac. 750 exhaust. Viton-coated outer layers create a superior seal not available with other steel or copper gaskets. The stroker kit would be your best bet with a KRE heads. 70 400 gto gp head stamp location on pontiac heads. Not too wild but was rated as high as 366 HP gross when installed in the 1969 Ram Air III 400 CID engine. For 400/389's, expect to turn your smaller engine just above 6,200 rpm. 12 bore x 4" stroke with 3. Pontiac engines were last produced and used in 1981. This new HIGH PERFORMANCE Pontiac cylinder head will have a 10 degree valve inclination angle and will be able to support a 2. style Pro Stock Engines. When you purchase one of our Pontiac engines you are buying the finest turn-key drop in ready crate engine combinations in the world. Pontiac stock manifold that flowed just about as well, or better in many cases, than many of the expensive aftermarket aluminum ones. com 1973 74 4C 2H PONTIAC 400 CYLINDER HEADS 96cc PAIR. After years of extensive R&D both on the flow bench and on our track, we have developed some of the best performing round port and D-port cast iron Pontiac cylinder heads ever. is producing to much compression for safely running pump gas. I'm into pontiac's pretty heavy and that is the best cam I've ever run. 30 over / 461 CID stroker Mahle pistonsComes with:500557 block (3000 miles on build before teardown / block is prepped and ready to be built up)Main caps ARP Main cap bolts ARP head boltsCylinders are. Sat on shelf for about 8 year, machine shop rebuilt these. Pontiac 400 heads - posted in General Engine (Non-Gen Specific): With a 400 60 over engine what heads would be the best choice if you are limited to 91 octane pump gas? i would be guessing something with a 2. 1972 7h1 Pontiac Cylinder Heads Gto 350 400 455 Firebird Ventura V8 Engine Oem it's best to begin. Tweet Pontiac Firebird Trans Am, 1981 MY. 00 GO TO SHOP. 00 to $4700. D-Port Heads. Gone was the pillared coupe, leaving a two-door GTO hardtop and convertible , again with the best dash layout in supercar land. Pontiac 400 76 block #13 heads Was removed from a 67 firebird Donut has the 67 firebird front assembly (VARY RARE ) Complete except for carb ALSO 1968 350 HO MOTOR , extremely rare Complete except for carb $2500 1969 WT 400 , heads built by sd performance $2500 1967 firebird turquoise front and rear seats , gauges , rear panels most interior. So here go's. comes with 1968 400 higher comp, heads bolted on. Pontiac 6X8-8 heads. I have a nice set of 16 pontiac heads dated A088 and A058 These are big valve heads. In 1977 Pontiac offered a new high performance engine package for the 400cid motor in the Can Am, Firebird Formula and the Firebird Trans Am. They would both need to be run through the machine shop and on one set couple of exhaust bolts need drilled out as well. We are pleased to introduce to you, our aluminum D-port Pontiac head. New carpet. Edelbrock is the most respected name in performance. As you can see from the chart above, the best head you can install on the 351M/400 is the Australian closed-chamber 302 2V head. 12 bore x 4" stroke with 3. In our last issue, we began our foray into the world of airflow, as. Custom sets for other aftermarket cylinder heads are also available. 1968 Pontiac Gto True Gto (242 car) Rebuilt Pontiac 400 with ram air III cam & ram air III 16 heads. 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 4X Cylinder heads. JamesEdition makes it easy to find Pontiac Firebird cars you're looking for, we feature Pontiac Firebird for sale by. Like all PONTIAC engines since 1955, the firing order sets is: 1-8-4-3-6-5-7-2, all by turning it counterclockwise. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Pontiac 400 block / pistons / stroker - $500 (ithaca) 1975-77 Pontiac 500557 Block 400 CID /. 25 intake and a 1. Friend recent purchased a 1972 pontiac firebiard that started life as an espirit, but somewhere down the road acquired a pontiac 400. Selling as a set, no scammers. Pontiac Performance Parts by LARRY WENZLER Pontiac Performance Parts at reasonable prices Just click on any of the items below for more PONTIAC PARTS info. Dart Machinery Joins as Title Sponsor of LightsOut 10 and 11 Warren, Michigan: Dart Machinery, the undisputed leader in high performance engine blocks and cylinder heads, has joined forces with Duck…. They were pulled from a running motor several years ago. it occurs inside Pontiac cylinder heads. is producing to much compression for safely running pump gas. Would you like to make this site your homepage? It's fast and easy. Heads and complete motors 68 - 71 400, Blocks. 300 intake valve and a 1. do NOT contact me with unsolicited services or offers. 121 in bore and 3. Starting from scratch, Frontzak put the Pontiac engine through the standard procedures to get it in proper shape. We work with the Summit Racing tech department to help you tackle your auto-related conundrums. We have access to a huge inventory of parts and can get you a quality part delivered to your door or to your mechanic. It offers complete sets containing bolts in the proper lengths required for original Pontiac D-port and round-port cylinder heads as well as the aftermarket Edelbrock offerings. Flange sizes 2. This head is completely different from our aluminum D port head that we introduced a couple of years ago. “It is a very solid car that rides extremely well. Swapped and Boosted TWIN TURBO Chevrolet V8 Small Block -283, 305, 327, 350, 400 - The Swapped and Boosted Inc. Is your current Pontiac engine tired? Have you noticed a power drop and worried about the reliability of your engine. What is the best Pontiac intake manifold for hi performance? I have a 73 pontiac motor with the stock intake manifold I am looking to replace it with a non egr manifold Update: this is a 73 pontiac 400 motor putting out aound 300 hp. safety tips;. Part I: Street/Strip Pump Gas Applications While it's true that an engine inhales and exhales through its cylinder. Pontiac 400 New Build. Gone forever were the two-speed slush boxes, better known as the Pontiac version of the Powerglide. Also, a rear spoiler was NEVER an option on a Firebird or Firebird 400. Pontiac built the Ram Air versions in a total of five different stages. 50 to run as fast as I want to safely. I knocked the upper rod bearings out of a 400 on 93 with an octane booster, so I found out first hand what. These head gaskets are made from 3 to 5 layers of spring stainless steel, offering a stronger base material than standard cylinder head gaskets. The 400 was inspired by the Pontiac 389 V8 and proved to be the last Pontiac engine with closed chambered heads. 75" refer to the flange or hub that the flywheel or flex plate goes over. Both were in Michigan. pontiac 99 cylinder heads gto 98cc 389 400 428 455 firebird lemans te here are a nice pair of 99 pontiac heads that were blasted,clean & mag. Over 6,000 Automotive Torque Specs. which alum head kre or edelbrock? On a different post I talked about my 455 flat top piston running #62 heads, comp xe284h with 1. Bored and honed with deck plate. butlerperformance. New carpet. This is our first aluminum Pontiac head casting that we have brought to the marketplace. They should work just fine, but I'm not sure what kind of increase you can expect. Stock Pontiac Head Specs * During my searching for information, I found quite a few discrepancies in the sources I was viewing. With aluminum heads you can run about a point and a half higher compression than you could with iron without fear of detonation----that's one of the reasons all new cars have aluminum besides the weight reduction. Or if they had the cash then they could just buy a pair of Weiand 'cheater' heads which looked exactly like the Canadian externally, but were decidedly different under the gasket. Pontiac Head ID. 725 solid roller cam, Ported to flow 315 intake Pontiac Edelbrock Heads 72cc. There was very little parts interchange between the different divisions. Pontiac Engines, Early (1955 to 1979) Pontiac V-8 engine parts and engine building. pontiac 400 short blocks - $400 (woodlands) ( crank, rods and pistons, no heads are included ) cores ( that means they will need to be rebuilt ). Can a Pontiac 400 with 6X heads setup properly make around 400 HP with good torque for street use with the right compression, good hydraulic flat tappet cam, RPM type intake and 750/800 cfm carb, full length headers and a 2 1/2" full length dual exhaust system?. 421 is a different casting, as it has a larger main bearing diameter, similar to 428 and 455. Re: Pontiac Engines - The low down May 14th, 2013, 01:10 PM 400 has a 4. What would be a good one to handle the job. DCI 400-455 is DCI's most popular crate engine. Many heads have been milled and the chamber size altered. These are at best 400 Ram Air Three Heads. Here are some ways of finding out and changing your compression ratio on Pontiac V8 engines. Witness this pump gas ultimate street engine built by Andy Mitchell of Hardcore Racing Engines for one of his Australian customers. We were armed with a 400-cfm laminar flow element (powered by six 1. 75 in stroke. landline - no text 603 four3seven + two/2/two/2. 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. SD Performance has more 5 Axis CNC Porting and Combustion Chamber Programs for Pontiac heads then anyone and we are constantly working on more and improving. 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. It's a 2 or 3 letter code on the block right in front of the passenger side cylinder head. Unfollow pontiac 400 heads to stop getting updates on your eBay Feed. About Contact Parts For Sale. No cracks or apparent damage anywhere - just need cleaning and updating. SD Performance spends an extensive amount of time on the dyno, at the track and on the street to develop some of the best performing Pontiac ported cylinder heads on the market today. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads Pontiac/Chevy Aluminum, 91cc. In our last issue, we began our foray into the world of airflow, as. I'm into pontiac's pretty heavy and that is the best cam I've ever run. In 1977 Pontiac offered a new high performance engine package for the 400cid motor in the Can Am, Firebird Formula and the Firebird Trans Am. Yes, I know some purists may not like that I "sacrificed" one of these, but I don't look at it like that. Description 1968 Pontiac GTO Convertible that is in Showroom condition. With this combination we can make over 550hp with incredible torque for the dream machine muscle car. 75 CR and a 351M will develop 10. 1969 Pontiac GTO A true muscle car, the GTO could be equipped with a 400-cubic-inch V-8 that generates 350 horses including a fully synched, floor-mounted 3-speed with Hurst shifter, dual exhausts, Quadra-jet carb, stiff suspension, buckets or notch-back front bench seat with fold-down armrest. Fits '65-'79 326, 350, 389, 400,. Components are interchangeable from each displacement, other than 265 & 301, which are only compatible with themselves. Shop the Best Pontiac 400-455-461-488 rotating assembly kits & Forged stroker kits for street or race. Early (1961 to 1979)Pontiac V-8 engine parts and engine building. If you are rebuilding a 455 Pontiac and want a stronger rotating assembl. We also have a large selection of new, used and surplus engines available online. SD Performance spends an extensive amount of time on the dyno, at the track and on the street to develop some of the best performing Pontiac ported cylinder heads on the market today. 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. Specialized castings can flow more than 400 cfm. The letter is the month, next 2 digits are the day and the last digit is the year. Find PONTIAC 6. An In-Depth Look At Some Current Pontiac Cylinder Head Packages On The Market. It may take a few seconds to load. In our last issue, we began our foray into the world of airflow, as. 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. Itstillruns. This is our first aluminum Pontiac head casting that we have brought to the marketplace. 400 unless you get busy on them! _____. com, I have recently received a 541 CID short block from Butler. It offers complete sets containing bolts in the proper lengths required for original Pontiac D-port and round-port cylinder heads as well as the aftermarket Edelbrock offerings. Pontiac 4X Cylinder heads. Stock Pontiac Head Specs * During my searching for information, I found quite a few discrepancies in the sources I was viewing. Short Block - $2000 1968 block ready for your cam, lifters, heads , however you want to make it your own. Every head gets off to a great start. Both were in Michigan. The 1970 Pontiac line up was composed of the base Firebird with 250 cid six, the mid range, 350 cid Espirit, the 400 cid Formula 400, and the 400 cid Ram Air Trans Am.