Re: cast iron bowtie
 

Firebird, in that situation I expect you will want a piston specific to the head you decide to run.

Re: cast iron bowtie
 

You should contact Randy or Michael Mans.
They held the record many times in the class with the Bowtie Vortec heads.
They also flogged and tested every cylinder head in the market and stayed with the Bowtie Vortec.

Do a search were Michael speaks about his experiences with the different heads for SS/CS.

Re: cast iron bowtie
 

DO NOT USE vortec bowtie heads!!!!!!!!!! Ask me how many sets I have seen cracked for my SS/CS customer.