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. The casting date on the underside is partially scraped off from being dragged across the ground as shown. What can be seen is 3.22. The date can not be seen when installed anyway. 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. The cooling ports do have some corrosion as shown. This looks like it will seal up with RTV. 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 Friday, October 22, 2021. This item is in the category “eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Air & Fuel Delivery\Other Air & Fuel Delivery”. 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