z28mobbin

I'm looking for some speedpros for an lq4. Since I have the gen iv rods I need pistons with floating wrist pins. http://www.summitracing.com/parts/slp-h1129cpa75mm these are the ones at summit but I'm unsure whether they use press fit or floating? Anyone have any experience with these? Or suggestions on another "quality" brand that's not gonna murder my wallet?

Quick Ranger

iTrader: (2)

I know Summit carries the piston to use with the floating rods, just make sure the piston uses a .943 pin. The Speed Pro piston with the .945 pin is a press fit.

z28mobbin

Awesome. That's the answer I was looking for. Thanks.

NemeSS

iTrader: (127)

Use the replacement lq9 which are floating and or the ls2 pistons. If u can use flat tops

z28mobbin

I was planning on picking up some ls2 or lq9 flat tops but found out I need to bore a little. So I'm just gonna bore it .30 over.