I recently bought an LS1 from a 99 Z28, and I'm looking to bore the engine. I've read that you can only go .010 over but the guy at my local machine shop says that I can go .020. What type of power gains can I expect with a .010 bore?

 

None... Thats a cleaning.

 

you are about to do a swap?

 

Ok thanks xx and that is the plan Lschaos, my original engine is the 260 V8 that Olds made for it.

 

Hey XX, What could I do to up my power without a resleeve?

 

All you need to do is add the right cam/springs and a tune. To get close to 400 RWHP. Oh and don't forget good flowing exhaust.