Originally Posted by stock48

Im prob at the low end of the power scale but have timeslips that reflect close to 1000hp on both the car and truck. Both are 2004 up lq4's with ARP Head studs, Ls9 head gaskets, mild ported 317 heads, JFR triple 12, and 218 cams, Isky single valve springs, Isky pushrods, stock truck intake manifolds, KBRacing truck style turbo kits with forcedinductions 76mm, and 80mm turbos. The car has been up and running for over a year, and truck going on 3yrs and 20k + miles. Neither has had even a valve cover pulled since put into service. All I can say about making power with stock bottom ends is tune, tune, and tune combined with good fuel, E85, and or meth injection. If you are careful these stock engines will take an unbelievable amount of power, and abuse. Get the tune wrong, or bad fuel and you can kill one below 500 hp.