I inherited a set of freshly built 289 heads with 194/160 Chevy valves installed. I have a '65 A Code Mustang. Because they are "old school" performance heads they also have stronger springs. My question: can I bolt these on with my present hardened pushrods or do I need longer pushrods since the Chevy valves are ever so slightly longer? Would it be wiser to have lighter springs installed?I am running a stock cam. No roller rockers, either. No racer here....just hoping for a little bump in hp.
I am looking for advice before taking the potentially costly risk of bolting them on and firing it up!
Many thanks
I am looking for advice before taking the potentially costly risk of bolting them on and firing it up!
Many thanks