So how much HP do u have now? Also u have 5.3 heads now right? I know guys who put 5.3 heads on a stock LS1 with the stock 5.3 valves and put down 20hp. U surely should have gain more.
So how much HP do u have now? Also u have 5.3 heads now right? I know guys who put 5.3 heads on a stock LS1 with the stock 5.3 valves and put down 20hp. U surely should have gain more.