11 intake valve and will therefore flow better. Pontiac Head Specs. This why the 455 is a better value than a 400 when it comes to making compression if you are wanting to get the most bang for your buck. Heads with casting dates starting around mid-March 1973 to mid-April 1973usually will have screw-in studs. com For A Great Price! Design Online, Upload Images & Logos, FREE SHIPPING! Order Today!. a edelbrock torker intake and a 750 edelbrock carb. Care should be used when milling production heads because the castings are generally none too thick. To ensure the proper fitment of 5-lug wheels, Tire Rack's fitment specialists have the exact bolt pattern information for all vehicles and review the information before listing a wheel as an exact fit for that vehicle in search results. Small enough to be towed by an ATV. This jacket is for those times when you really want to turn heads. 055" with that much cut off so all the milling may not be all too cheap!. This handy tool is for both professional engine builders as well as the amateur. Isuzu Npr. Boca Bearings is the leader in Ceramic and Ceramic Hybrid bearing technology for industrial and recreational applications. , Detroit, Michigan Grand River Avenue Girls 3-6x (A) I was in awe of this man as he was the head of the company and he would always speak. At Walmart Photo Center, you can create prints, wall art, photo books, custom cards, and a whole lot more for yourself or your business and as gifts. Depends on what you want to accomplish. rebuild pontiac v-8: factory parts guide March 29, 2017 by Pontiac DiY The Pontiac V-8 block is constructed of cast iron, and though its displacement increased from 287 to 455 ci by enlarging bore and lengthening stroke over the years, the external dimensions didn’t waiver far from the original design. Special Intake Manifolds (Various Manufacturers) We have put together a collection of photographs and descriptions to help you identify parts for your Pontiac. Restore a Muscle Car, LLC originated in 2005 as a shop that would bring back "classic muscle" but to a new level of restoration. So far we have tried the following:. This 'bird's "YU" branded V8 combined the largest muscle car engine you could buy with Pontiac's proven "6X" head design to create one of the fastest pony cars on the market. Isuzu Npr. MORE! DAVE RIBEIRO Lynn, HP on the 77/78 -400 has been move up over 283 to 290. See for yourself why shoppers love our selection and award-winning customer service. I have determined that the heads on my firebird are from a 77 pontiac and are 6x8's. The stamped number was the last digit of. Page 74 Chapter 6 of Jim Hands book " How to build Max-Performance Pontiac V-8's" It basically says that you can mill the deck of all Pontiac heads to reduce the chamber volume. Compression Ratio and The Pontiac Engine. I would also like to accomplish this without nitrous any suggestions? It does have the 6X heads in case that helps. Generally speaking the less that's milled beyond what is needed to true the surfaces, the better. Behind that mill, a tough Borg Warner 4-speed sends power to a familiar GM axle. Shop BMW vehicles for sale at Cars. Articoli di modellismo ferroviario scala 00-Mainline Models scale 3 car passenger set. 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 London. Since the only mod I am doing to up compression is milling I need to know how much I can safely mill these heads ( milling is done by a buddy of mine: free ). BP ports more Pontiac cylinder heads than anyone in the world. Search the world's most comprehensive index of full-text books. Your engine is the most important part of your vehicle, and the most expensive component to replace if it fails, so it makes sense to properly maintain that mill and use the best parts. First, RaceKrafters will attend to our 6X Pontiac head castings. Whoa, woad, hold your horses, before we begin, you need to know who is who. The Vision Wheels catalog showcases more than 20 wheel styles and 40 finishes along with an expansion of sizes to a variety of existing styles. We offer a variety of Pontiac 96 Heads for your automotive needs. , Detroit, Michigan Grand River Avenue Girls 3-6x (A) I was in awe of this man as he was the head of the company and he would always speak. Both carbs have correct tags. Stock Pontiac Head Flow Head Casting Number: Year: Notes: Porting: Intake Lift: Intake Flow: Exhaust Lift: Exhaust Flow: Download Desktop Dyno 2000. I used a set of these on a 455 in a '81 Camaro and was very satisfied w/the results. This is my first Pontiac and do not know what combos work. 039" gasket. Discover our wide selection of wholesale t-shirts, polos, sweatshirts, tie dyed apparel, and underwear. 88:1 with a. Privacy Policy. Find nearby store locations. Any of the Pontiac 350 heads (like the 5C-4 and 6X-4) will give you around 9. 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. 6 55-60 INT MAN 538177 61-62 389 62 D-Port 1. Compression Ratio and The Pontiac Engine. At Walmart Photo Center, you can create prints, wall art, photo books, custom cards, and a whole lot more for yourself or your business and as gifts. Behind that mill, a. If you are in need of bulk clothing for your company or upcoming event, check out our amazing selection of bulk apparel from the LOW PRICE LEADER. This handy tool is for both professional engine builders as well as the amateur. com For A Great Price! Design Online, Upload Images & Logos, FREE SHIPPING! Order Today!. I would call Super Duty Firebirds in Washington and see what he has. For Mercedes Benz W463a W464 G550 Full Conversion G63 Body Kit 2018+. Depends on what you want to accomplish. Oct 2, 2019- Classic GM Cars & Trucks, Mainly of the 1920's, 30's, 40's, 50's, 60's & 70s,. 030 I am using 6x-8 heads, and they have been milled down to the limit here. Car Rental Specials and Discounts. 2- 101 cc's. Flooring for home and commercial use. In 1975 Pontiac started stamping extra numbers (1/4" tall) on their heads. More commonly known today as the means of identifying 6X heads, the 4X head was among the first Pontiac heads to receive an external application stamping. The '77 6X heads do have the more desirable 2. Discover more every day. It's outdoor entertaining made easy. The engines were coded with many numbers and letters. Recently, my father and I started working on his 1965 GTO which has the stock 389. The display has rounded corners that follow a beautiful curved design, and these corners are within a standard rectangle. What do MERV ratings mean? Allergies, pets, odors and smoking all can greatly affect the quality of your indoor air. It was bored. The Vision Wheels catalog showcases more than 20 wheel styles and 40 finishes along with an expansion of sizes to a variety of existing styles. Small enough to be towed by an ATV. They are usually stamped on the machined pads by the valve covers. Ram Grand - $499. Sutherland has one of the largest felt inventories in North America. There's a formula for how much to mill. Firebird Trans Am Tribute built with factory Trans Am parts in the early 1980's. Articoli di modellismo ferroviario scala H0-RIVAROSSI 2717 US-vetture passeggeri Superliner Croix NUOVO + OVP ST. Vintage Car Parts Including Ford, Chevy, Pontiac. Dagaanbiedingen en aanbiedingen vind jij via Ikwildagaanbiedingen. They provided the lowest factory compression ratio ever on a Pontiac 400. 055" with that much cut off so all the milling may not be all too cheap!. So far we have tried the following:. Com is a One-Stop Web Destination for all of your Thrift Shopping Needs. Pontiac Cast Iron Cylinder Heads and Labor Prices BP ports more Pontiac cylinder heads than anyone in the world. From cameras to memory cards, we have everything you could possibly desire at the greatest. 8 4he1 Overhaul Gasket + Cylinder Head + Liner Kit + Glow Plugs. I have hundreds of cast iron D-port heads in stock. They can be trued up milled 020" use Poly Locks for the Rocker arms. 75-79 350 & 400 ALL 75-76 455. In stock form the Pontiacs like yours would eat a 57 chevys lunch every time. The Spring issue of Street Rod Life is now available and it pushes the limits of the rodding hobby. Also if any one has taken this route could you give me an estimation on the cost of undertaking a. The'70 #15s heads from the 455 have the exact same intake and exhaust valve sizes as the #46s, the only change is the #15s sport an 87cc combustion chamber. 84 Lumber is your source for building supplies, building materials and all your construction needs. Yes, Don Himes car is a good combo because its still rated at the old 260HP where we all started at. 1970-Now-Lot Vintage Small Plastic Toy Soldiers WWII Many Painted 1 Tall Figures of oqxfpm2338-buy cheap new - www. see chart below HEAD STAMP LOCATION ON PONTIAC HEADS. Buy Ram on eBay now! 2014 Ram Dodge 270 241 Hemi Heads Red Ram Intake Exhaust Valves Springs. Kmart is a nationwide retailer of electronics, toys, clothing, bedding, furniture & home decor. We're back! and we're here to stay. Build your own custom newsletter with the content you love from Dragzine, directly to your inbox, absolutely FREE!. 039" gasket. Get FREE SHIPPING on phones and devices with new activations. I would say that any added volume "above the valves" doesn't change the CR because the I and E valves are both closed during the compression and power strokes. Check out our range of Bolts products at your local Bunnings Warehouse. Stock Pontiac Head Specs * During my searching for information, I found quite a few discrepancies in the sources I was viewing. For Mercedes Benz W463a W464 G550 Full Conversion G63 Body Kit 2018+. I have a pair of 6x heads that have gm 12 stamped on the right side of them. Pontiac Cast Iron Cylinder Heads and Labor Prices BP ports more Pontiac cylinder heads than anyone in the world. Featuring a big selection of a ball for sale now. This was not the case, and an identity crisis ensued. All these items and much more for sale. Buy online, pick up in store. Prazi Pr-7000 12 Beam Cutter For 7-14 And 8-14 Worm Drive Circular Saw 3x New. The rule of thumb for boring bars, (lathe or boring heads) is, the stick out must not exceed 4 X the diam of the barit can go to 6X the diam of the bar for a finishing cut, but in all cases you will get deflection if more than 4 X diamand you use the biggest diam bar from mounting point to actual bar diam. The date code shows they were built 12/08/76. Google has many special features to help you find exactly what you're looking for. ** Use sheet stainless steel block off plate. Here are some ways of finding out and changing your compression ratio on Pontiac V8 engines. I wish to point out that Pontiac manufactured heads with push-in studs and screw-in studs using guide plates. They are usually stamped on the machined pads by the valve covers. Get the best deals on Pontiac Vintage Car & Truck Cylinder Heads & Parts when you Vintage and Classic Car & Truck Cylinder Heads & Parts Pontiac 6X 8 Heads B. IXL is the world's most popular subscription-based learning site for K–12. Search the world's information, including webpages, images, videos and more. Privacy Policy. It is safe to mill up to. Head Mill Chart Good forum discussion on the 6X-8 heads 6x-8 heads. As a review to those who may not have followed the build-up, our test engine is a 467ci mill with ported 6X cyl-inder heads, a hydraulic roller camshaft, and a street-friendly 9. 1:1 compression ratio. The inlet and outlets are the same size on a tank, weather your plumbing is the same size should be the question. Prazi Pr-7000. However, Pontiac made two different 6X heads in '77. I also determined that the block is from late in 75. Blue rhino propane is more than just fuel. The 4X Heads really are not that much different then the much used 6X Heads are. This is not critical, but they should be the same,if there is no backflow. On purchases of $2,000 or more made with your Lumber Liquidators Credit Card from October 23 - November 5, 2019. Shop trendy tops, pants, stylish dresses & more in sizes 10 to 28. Prazi Pr-7000 12 Beam Cutter For 7-14 And 8-14 Worm Drive Circular Saw 3x New. They all take to similar porting mods. The 455 Pontiac Trans Am was history. Hugh- I located the information on the milling the Pontiac head. Welcome, savvy savers! You’ve come to the right place for the best rental car deals around. Get Full Color, Custom Signs at BuildASign. -1956 Nascar dual Quad. If you don't see what your looking for, please shoot me an email and I will try to direct you to the item. Pontiac Engines. Presenting in stock and ready to ship now online!. However, it appeared to many that the Pontiac 350 engine shared the same head with the standard L-78. 6 55-60 INT MAN 538177 61-62 389 62 D-Port 1. AND WE KNOW MORE ABOUT BUILDING STOCK PONTIAC ENGINES THAN ANYONE. How much to mill. I have a mid 70's Pontiac 400 I was thinking of rebuilding. Get free 2-day shipping on qualified Sun Shade products or buy products today with Buy Online Pick Up in Store. 060 and has been filled with Poncho 400s slugs. Having a hard time finding Ford Transponder Key online? Discover Ford Transponder Key on sale right here with the biggest variety of Ford Transponder Key anywhere online. 77 valves and screw-in studs and guideplates stock. 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 London. It’s outdoor entertaining made easy. Find Conversion Hi Lo Csp in stock and ready for shipping today online!. GM High-Tech. - Zipper Closure -. I would also like to accomplish this without nitrous any suggestions? It does have the 6X heads in case that helps. What do MERV ratings mean? Allergies, pets, odors and smoking all can greatly affect the quality of your indoor air. Why waste the money trying to mill 6x-8's. The Pontiac Firebird was a pony car/muscle car manufactured by General Motors from 1967 to 2002. I have hundreds of cast iron D-port heads in stock. This is my first Pontiac and do not know what combos work. As a review to those who may not have followed the build-up, our test engine is a 467ci mill with ported 6X cyl-inder heads, a hydraulic roller camshaft, and a street-friendly 9. Recently, my father and I started working on his 1965 GTO which has the stock 389. The ultimate cathedral versus rectangular port cylinder head showdown. The 4X Heads really are not that much different then the much used 6X Heads are. It may take a few seconds to load. Elke dag een uitgebreid dagaanbiedingen overzicht en alle aanbiedingen op een rij. It should not be too hard to turn up a 4x head fitted with the smaller 92 cc chamber, or a 5c head with the 89 cc chamber off of a 75 350 motor, even the 75 1/2 to 79 6X-8 head can be milled. We take a look at how this Camaro became a corner carver. AOL latest headlines, entertainment, sports, articles for business, health and world news. The point here is that the 5C-4 and 6X-4 heads generally have about 95cc combustion chambers. What engine do I have? Do I have big valve heads? Pontiac made it easy to know what is sitting between the fenders of your Pontiac or on the ground at the local salvage yard. wiTh Project Pure Poncho fully broken-in and its power documented (491. We had the engine redone and decided to go with the 400 6X Heads from a 1976 Pontiac. Prazi Pr-7000. I'll be interested to see what others say. Great deals on Dream On Me baby products can always be had at Burlington! Cribs, bassinets, and strollers - shop them all and get exactly what baby needs. The MAXXEON WorkStar® 620 Technician's Headlamp is a high performance rechargeable LED light with an output of up to 600 lumens. I will be using hedders. Nothing you put forward is actually evidence of Savage bolt action being "better" than the other "budget" actions. Those cars can only run H,I,J /sa. CLICK IMAGE FOR LARGER VIEW. Note that Pontiac normally overrated the compression by about. Big Tex Trailers is America's #1 professional-grade trailer manufacturer. It features a light head that not only pivots up and down, but has an adjustable 6X zoom lens allowing you to focus the beam on your work area. Arrested by a suspicious cop. To identify the right MOOG part for virtually any application, please use the Wagner TruView PLUS capsules, also featuring a Xenon gas charge, offer the. You are so kind-hearted! I shed a tear thinking of American generosity. 6 55-60 INT MAN 538177 61-62 389 62 D-Port 1. 060 which would decrease chamber volume by 12cc (1cc per. Yep - just your run of mill big valve large chamber Pontiac head. Buildings,Tunnels & Bridges-WOODLAND BUILT & READY HO SCALE BUILDING THEATER LIGHTING SCENICS LED pnlxbj5785-a lot of surprises - www. I searched for products on findsimilar. Generally, uncut Pontiac heads can be milled at least 0. Bing helps you turn information into action, making it faster and easier to go from searching to doing. 77 valves and screw-in studs and guideplates stock. 11 intake valve and will therefore flow better. Get Full Color, Custom Signs at BuildASign. Hawk Security is a full-service security provider committed to fulfilling our customer’s security needs with integrity, honesty, enthusiasm, and excellent service. I think up-engined FWDers skew "bad in theory but can be OK in practice. 75-79 350 & 400 ALL 75-76 455. Isuzu Npr 4. com and wow did I strike gold. We feature an extremely large selection at unbelievable prices. Depends on what you want to accomplish. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. 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. The compression ratio is 8:1. The set of #62 heads and 4X heads that I have do not have this hole. see chart below HEAD STAMP LOCATION ON PONTIAC HEADS. Welcome, savvy savers! You've come to the right place for the best rental car deals around. The NTSB issues an accident report following the investigation. Options on this '77 include Formula wheel and Rally Gauge cluster with clock and tach. Which one is of these cylinders are the best all around for you and for that matter, for all. AOL latest headlines, entertainment, sports, articles for business, health and world news. Bing helps you turn information into action, making it faster and easier to go from searching to doing. We work together with our customers to create an enjoyable and exciting restoration experience they can pass along to their family and friends. 95599999999999996 0 1 0 31302. 88 first gear 4 speed trans am. Cameras & Photography. Chances are these are too big tho'. They provided the lowest factory compression ratio ever on a Pontiac 400. ** Use sheet stainless steel block off plate. , Detroit, Michigan Grand River Avenue Girls 3-6x (A) I was in awe of this man as he was the head of the company and he would always speak. Note that Pontiac normally overrated the compression by about. Pontiac heads are. Yes, Don Himes car is a good combo because its still rated at the old 260HP where we all started at. It may take a few seconds to load. Prazi Pr-7000. The November, 2012 issue of High Performance Pontiac features an in-depth test of BRAD PENN ® PENN GRADE 1 ® motor oils using their Project Pure Poncho (aka The Mule) test engine, a 467ci mill with ported 6X cylinder heads, a hydraulic roller camshaft, and a street-friendly 9. 005 inch removed from the cylinder head deck surface decreases the chamber volume about 1 cc on '67-and-later open chamber heads. More commonly known today as the means of identifying 6X heads, the 4X head was among the first Pontiac heads to receive an external application stamping. 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. the 6X heads have a strange small hole just above the exhaust crossover as you see above. if anyone has info on this thanks in advance. One cc will be deleted for each. I think for every. Intakes in stock: None in stock Heads in stock: 1978 Trans Am 400 6X-8 101 cc, 2. OO rapmep4349-80% di sconto - www. Here's another item to consider. 65's on "normal" Pontiac heads you will however need to elongate the pushrod passages in the heads to make them wider top to bottom, otherwise the pushrods will rub. Pontiac 1970 Gto 455 High Output Cylinder Heads. Hugh- I located the information on the milling the Pontiac head. Locomotives-RailAD 1018- E-Lok 1116 ÖBB Ep6 Eurovision DC Analog edition limited Taurus osfjij6473-fast shipping and best service - www. Special Intake Manifolds (Various Manufacturers) We have put together a collection of photographs and descriptions to help you identify parts for your Pontiac. Engine Tech - Pontiac 400 build Ideas - I am getting ready to do a 400 build for my 65 GTO. 005″ removed from the head. Two carbs, one intake. com, you'll find over 67,000 items at great prices! Ship to one of our hundreds of local stores for FREE shipping!. The casting code will help determine what the block is. And they certainly look great. The November, 2012 issue of High Performance Pontiac features an in-depth test of BRAD PENN ® PENN GRADE 1 ® motor oils using their Project Pure Poncho (aka The Mule) test engine, a 467ci mill with ported 6X cylinder heads, a hydraulic roller camshaft, and a street-friendly 9. Explore the new site, shop online and learn more about our plans to open new locations. Your Walmart Photo account. 005 inches removed). About Contact Parts For Sale. Any of the Pontiac 350 heads (like the 5C-4 and 6X-4) will give you around 9. grosses Konvolut Figuren auch unbemalt pogsmr3152-deals sale - www. However, Pontiac made two different 6X heads in '77. Cameras & Photography. Car was always garaged and NOT driven in snow and. This is my first Pontiac and do not know what combos work. Combustion chamber volume-- How much open space is in the head above the cylinder. : NEEDS HEAD GASKET!!!!!1996 Pontiac grand prix with 240,000 miles. 055" with that much cut off so all the milling may not be all too cheap!. OLX joins Carousell to bring you a bigger marketplace where you can buy deals up to 70% less! Chat on the go and buy preloved items at the best price. What do MERV ratings mean? Allergies, pets, odors and smoking all can greatly affect the quality of your indoor air. Read more: Spirolock Tool & 421 Pontiac Combo - Hot Rod Magazine. I still wonder why everyone got ate up with the 57 chevy. See How to Identify Pontiac's Small Chambered 6X Head for more info on ID'ing 6X heads. Read the complete story in Westboro' History. That left the Trans Am suffering a bit of an identity crisis. 6L/400 Cylinder Heads and get Free Shipping on Orders Over $99 at Summit Racing!. Get free 2-day shipping on qualified Sun Shade products or buy products today with Buy Online Pick Up in Store. The stamped number was the last digit of. 1968 Pontiac Firebird Cylinder Head Work for 455. Big trick is to remember a Pontiac is a torque engine its just not meant to be rpm'ed. Special Intake Manifolds (Various Manufacturers) We have put together a collection of photographs and descriptions to help you identify parts for your Pontiac. My mill is a bone stock 69 Pontiac Q jet with 6X heads. Pokémon Individual Cards-X2 Pokemon Card GX 156 147 Burning Shadows Holo Art Secret Rare Full MARSHADOW rpuvbe5272-free shipping worldwide - www. Nothing you put forward is actually evidence of Savage bolt action being "better" than the other "budget" actions. - Zipper Closure -. I also used an Edelbrock Performer intake, Flowtech headers and a stock carb. Find a store or request a quote online today!. Stop by to find out why we're America's #1 propane tank exchange brand. Isuzu Npr 4. I have a mid 70's Pontiac 400 I was thinking of rebuilding. I have a pair of 6x heads that have gm 12 stamped on the right side of them. the 6X heads have a strange small hole just above the exhaust crossover as you see above. The set of #62 heads and 4X heads that I have do not have this hole. com and wow did I strike gold. I am the second owner of the car since 2001. Discount Filters offers many different types of discount air filters to help you breathe better air inside your home based on your specific needs. Heads with the small "a" designation are guaranteed to be hardened seat heads. Muncie Super Duty M23 Super Case 4-speed Drag Racing Rock. And they certainly look great. In 1973 Pontiac started stamping extra numbers (1/4" tall) on their heads. Intelligent shopping from GratefulGoose. I still wonder why everyone got ate up with the 57 chevy. GameSir Mechanical Gaming Keyboard Z1 for PC/Mobile Phone, One-Handed Gaming Keypad with Macro Keys for FPS Game, RGB Backlighting, Anti-ghosting, Blue Key Switches, Built-in Battery (Blue Switch). Finding proper heads to start with is #1. From the little bit of research I've done, I think I can boost the compresion up into nines with the GTO. If you do go with 1. Wherever your next adventure is taking you, browse Thrifty's current offers to start your next getaway with major savings. Back in the November 2008 issue, we pitted a 1976 50th Anniversary Trans Am against a 1981 Special Edition, providing a comparison of the first and last versions of Pontiac's much-loved black-and-gold "Special Edition" T/As. Big assortment of at hard to beat asking prices. From the little bit of research I've done, I think I can boost the compresion up into nines with the GTO. Delegation strategies for the NCLEX, Prioritization for the NCLEX, Infection Control for the NCLEX, FREE resources for the NCLEX, FREE NCLEX Quizzes for the NCLEX, FREE NCLEX exams for the NCLEX, Failed the NCLEX - Help is here. OLX joins Carousell to bring you a bigger marketplace where you can buy deals up to 70% less! Chat on the go and buy preloved items at the best price. Casting 6X heads and similar heads from the "smog era" generally all have hardened exhaust seats, screw-in rocker studs and guide plates, with 2. Prazi Pr-7000. Our purchasers search for the cleanest lines, smoothest curves and best stamped form when they purchase panels like; rockers, rear quarters, cab corners, door skins and other restoration parts. The'70 #15s heads from the 455 have the exact same intake and exhaust valve sizes as the #46s, the only change is the #15s sport an 87cc combustion chamber. Sutherland Felt Company, a Division of Sutherland Industries, is a leading producer and converter of industrial wool felt, S. Shop Walgreens. Build your own custom newsletter with the content you love from Dragzine, directly to your inbox, absolutely FREE!. The'70 #15s heads from the 455 have the exact same intake and exhaust valve sizes as the #46s, the only change is the #15s sport an 87cc combustion chamber. 84 Lumber is your source for building supplies, building materials and all your construction needs. It should not be too hard to turn up a 4x head fitted with the smaller 92 cc chamber, or a 5c head with the 89 cc chamber off of a 75 350 motor, even the 75 1/2 to 79 6X-8 head can be milled. Cylinder heads are milled to raise compression or to correct the deck surface if it's warped or otherwise out of spec. These head numbers represented chamber sizes. See more ideas about Cars, Gm car and Vehicles. Our purchasers search for the cleanest lines, smoothest curves and best stamped form when they purchase panels like; rockers, rear quarters, cab corners, door skins and other restoration parts. I still wonder why everyone got ate up with the 57 chevy. 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. With a Walmart Photo account, you can upload your photos from your computer, phone, other device, or social media albums. Buy products such as SwissTech Men's and Big Men's Puffer Jacket, up to Size 5XL, George Men's Regular Fit Jean at Walmart and save. Your customizable and curated collection of the best in trusted news plus coverage of sports, entertainment, money, weather, travel, health and lifestyle, combined with Outlook/Hotmail, Facebook. 75-79 350 & 400 ALL 75-76 455. I assume they are considered 77 since it was in Dec of 76.