i have a LQ4 and i want to put a set of heads on it to bring up my compression. i dont know much bout all the internal engine stuff, and have read through the forums, but im still lost as what to go with. i have seen and heard of puttin on CNC LS6 heads, CNC LS2 heads,..... so can ya help me out guys. id like to get my compression up to around 10.5 to 1 for as little hassel as possible. i would like just to bolt them on and be done (well of course with a retune). thanks

 

what head casting is on it now??? milling the ones you have would accomplish the same thing, and you wouldnt have to buy a whole new pair of castings.

 

i have the 317 casting. what bout flow? milling will fix compression but if i had them p/p would that get me the flow like an aftermarket head? anyone know a good machine shop on the south side of chicago?

 

I went with Patriots stage 1 243's, which are basically LS6 heads without the sodium filled valves. With the LQ9 it was around 11:1 ratio. With my own tuning I was able to run 87 octane and no detonation and still had decent power.

 

nice one. has anyone tried the trick flow heads. i want to say i remember hearing bout those flowing really good and puttin down some good numbers. thanks for all the help guys.