head swap question?

[fastfox90]

Gathering parts to swap over to a set of gt-40 351 marine heads. this may be a stupid question..... do I need to use 351 or 302 pushrods? they have different part numbers in the summit book so they must be different??

 

[SScott]

Same pushrods you had, if the shortblock is a 302 then that is what you need. Only issue when running 351W heads on a 302 is bolt holes, the 351 has bigger holes, so they make stepped washers to compensate when using smaller head bolts. I think a 302 has 7/16 bolts and a 351 has 1/2 bolts.