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i have a 1995 454, and i believe it is the gen v engine family. basically a boat anchor as far as performance. i have a set of 1965/1966 closed chamber heads that i think should wake this motor up! casting # 3856206. so here comes the questions, what length push rods to use? i am thinking use stock rockers, valve springs etc. i know i will have to use special head gaskets made just for this conversion and i may have to do some machine work to the valve covers. i haven't done my home work as far as intake manifold or exhaust manifolds yet. not looking for a drag racer just something that should pull like a 454 should and maybe a little bit better mpg. also thinking about ditching the dished out pistons for flat tops. i also may have a issue with coolant temp sensor, mine has two, one in the head and another in the intake. i am listening, what have i missed?