We got a chance to check out SLP Performance's 1.85:1 roller rocker arms for the L92 cylinder head. Being an outsider to the fuel-injected world, I assumed all LS clyinder heads were born equal, but apparently thats not the case. The L-92 cylinder head is designed with a offset intake rockers based off the new design of used in the soon to be dead Pontiac G8 and 2010 Chevrolet Camaro. We gained over .050" in total valve lift by simply installing the SLP kit complete with rockers, push rods, and valve springs. On the dyno we made 15 horsepower through the entire power curve.