This is an original GM high performance aluminum intake manifolds for Big Block Chevy engines with rectangular port heads and a Holley carburetor. The casting number is 3933163 as shown. There is no casting date on the underside and does not appear to have ever been one as shown. This is a bonus since it can be used on any engine and be correct. This is a very hard to find original GM 3933163 aluminum intake. This intake is in good original condition as shown. It is in bare aluminum finish with no paints or coatings. The intake appears to wear its original finish, not blasted, so I decided to leave it as is for those after originality. The part number, firing order, and all important Winter’s Foundry casting mark are all intact and undisturbed. I see no breaks or repairs to this intake. There is also no porting other than the carb divider having a small section relieved, probably for a Holley 3 barrel carb. The cooling ports have no corrosion as shown. This is a very nice factory GM high performance aluminum BBC intake. This is your chance to own the real deal 3933163 intake you have been dreaming about at a GREAT PRICE. Don’t Miss Out! Check out my other listings for more rare and hard to find parts. The item “3933163 OEM GM Aluminum Intake 68 69 Big Block Chevy L78 396 L72 427 COPO Yenko” is in sale since Thursday, December 16, 2021. This item is in the category “eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Air & Fuel Delivery\Carburetors”. The seller is “super-novass” and is located in Santa Cruz, California. This item can be shipped worldwide.

• Interchange Part Number: 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974
• Brand: Chevrolet