[08z51c6]

Originally Posted by rgrizzard

Not really! New heads won't get you squat on an LS3. On an LS1 or 2 that is a different story.

Really who told you that!!!

http://www.gmhightechperformance.com.../photo_27.html


After a set of ported heads:


http://www.gmhightechperformance.com.../photo_26.html


518hp and 452 lbs of torque at the wheels is pretty sick if you ask me.