Does anyone know what or if there are any specific codes for Big Port Heads? I've had a look around and it appears that heads starting with RHT and LHT (maybe V8) are definitely big port heads but I've also seen on a few other places that heads starting with RHS20V and LHS20V are also big port but opinions differ!
I had heads starting with RHH on my bug which I think are 2.5 heads but the replacement ones I got have rhs20v and lhs20v on them..... there is a massive difference in the intake ports.....
old heads
replacement heads
Any ideas!?!