I recently blew a head gasket on my car and the guy i bought it from told me it was a 383. Well I know the block itself is a 350 goodwrench block but it has Pro Topline heads on her. I was wondering if someone could maybe help me try to find the part number for the heads and tell me if the heads were for regular 350 or 383 so i know what head gaskets to get to replace them. On the side of the Heads they have 2 different part numbers, one being 123400000A 1960 1002.....Driver side.......and the next one being 123400000A 1967 1002.... passenger side. I would really appreciate any input because i really want to get her back on the road again asap. Thank you

 

The 124300000a is the Pro Topline part number. The 1960 and 1967 are a date code. Not sure what the 1002 is; possibly a casting identification. Those heads are now sold by RHS. Hope this helps.

 

Thank you sir, just sent the heads in to get them ported and milled as well as the intake and exhaust manifolds and getting a bigger cam. Already being bored 30 over i cant wait to see what she will be capable of.