This is an original GM exhaust manifold for Small Block Chevy engines. The casting number is 3846559 and is chrisp and easy to read. The back size is cast E 11 64 as shown. The 3846559 exhaust manifold is a driver's side manifold that was original equipment on many 1964-1967 and 1971-1972 Corvette models. This manifold will also work on many other applications. Please confirm your specific application.
This manifold is in very good original condition overall. The casting is clean and chrisp. I see no modifications or repairs to this manifold. The pipe studs are in good original condition as shown. The only flaw I see if the lower accessory mounting boss has a chip out of it. The threads are weak at the beginning and better deeper into the hole. This is a very nice OEM GM exhaust manifold.
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