LS7 head gaskets
GM even says for the LSX block 6.0, 6.2 and 7.0 gaskets may all be used, depending on bore size.
I have someone telling me a large bore (4.160") cometic LS1 style gasket won't work on an LS7 block using AFR heads, they must use cometics LS7 gasket.
maybe i'm wrong?
if so correct me.

