how to identify right or left heads

[Bob Hughes]

Im trying to figure out which head goes on which side of the block. I had them rebuilt but now they are at home I can,t tell which is let or right. Casting numbers are C3VE 6060-B and C3VE 6080-B . Can anyone help? I can,t see any difference. Are they interchangeable ? These heads are for my 1964 430 Lincoln Tks Bob

[Chris430]

Bob the heads swap side to side. Look for witness marks from the head gaskets and intake manifold. The compressor brace spacer should have left a witness mark where that head bolt goes.

[Bob Hughes]

thanks very much for your reply. I guess thats why I couldnt tell which was left and which was right