Casting # available 2a, 3a, #5a, #7a, #7A, #10, #8 each.

“This is a used bare small block Oldsmobile head, ready for machining. Bare means there are no parts in them, and you cannot install them on a car.”

BARE Oldsmobile used core cylinder heads, each. You must specify which casting number and how many you want before you order as these are advertised and available elsewhere. They are every bit of 54 pounds which means the shipping cost is significant, which means, "a lot".

These heads are not for four-cylinder engines or Big-block Olds; specifically not for 400, 425 or 455 Olds engines.

These are very used cast iron V8 cylinder heads -for rebuilding only-. You will only want to buy one because your own cylinder head is cracked. Any head described as a core will need valve guides, surfacing, perhaps seats ground or replaced, bolt hole threads chased or thread inserts installed. It doesn't come with valves, and it isn't part of a kit. If you are not an expert, don't buy them.

Shipping weight is 54 lbs.

Casting #8 (411929) 350 5.7 Olds 68-76

Casting #3a (554716) 350 5.7 Olds 1977-1980

Casting #7a (409147) 307 5.0 Olds 85-90

Casting #5a (3317) 307 5.0 Olds 1981-1985

Casting #2a (554715) 260 Olds 1977-1982

Casting #10 (550362) 260 Olds 1975-1976