I have an LQ4 that I plan on installing in an 87 monte. The plan was to install ls6 intake and 243 heads (to bump up compresstion) and custom cam. Now I deceided to redo the bottom end - new rods/pistons. Now if I'm going to change pistons, can pretty much pick the compression I want, should I just keep the 317's or still go with 243's?

Any opinions welcome

 

are you planing to run boost later on or are you staying NA also are you getting forge pistons? i will port the heads and get a few more ponies

 

Staying NA and yes forged pistons. Just trying to decide if I should buy 243's or just use the 317's (cleaned up and valve job of course).

 

Use 243's, have them milled while being cleaned up, get a flat top piston with a -2 to -3 cc valve relive, and go from there. How much you will want to mill depends on what cam/compression you're looking for.

 

thanks for the help. Thinking about it some more, 243's and flat tops, that's basically an LS2....compression wise anyways. Should be good for my build.