Description :

You are looking at a NOS GM cylinder head, cast # 555644 which I believe is pt# 555643. It is correct for 49 to 50 Olds 303 V8. It will also fit 51 through 56 Olds engines but the compression is unique to the 49 50 engine. This part was just found in a long forgotten barn loft horde of NOS parts removed from a local dealership 35 years ago. The box is a little ratty but the head is still mint. You will never find another in NOS condition. If you need it, do not let it get away.

Shipping :

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