These ZL1’s are hard to beat when it comes to responding to modifications!! This one came to us with a cold air intake and headers, baselining at a strong 513rwhp & 497 ft/lbs. After adding our ZL Win Cam along with our Brian Tooley Deluxe Cam Kit, more boost and a Lingenfelter Heat Exchanger, it put down 656 rwhp & 635 ft/lbs tq – gains of 143 rwhp & 138 ft/lbs tq!
