Hey guys
I think Im going to mill my 317 heads .030 on my LQ4 with a stock metal gasket. Now will I need a short push rod since the head is a little shorter or will my stock ones be fine?

 

It's best to just measure. $20 pushrod length checker.

 

I was hoping someone that has done this before could chim in before I go and alter the heads permantly.

 

Yes you will need shorter pushrods if cam is unchanged. So LQ4 with stock cam and milled heads will need shorter prods.
But if you have an aftermarket cam stock length may be allright depending on lobes and lift of cam.
Bottom line measure.

 

thats what I was guessing. Thanks for the help!

 

what CC does 317's heads mill 0.030 give you?