This camshaft is NEW for 2015! Tick Performance proudly offers our Elite Series of Camshafts designed specifically for 4.8L & 5.3L Engines! Using the latest and greatest technology available, we've put together a complete line of Camshafts that are designed to meet every goal, from mild to wild. Our Elite Series of Camshafts are all manufactured by Cam Motion and are updated with a new version every time an advancement in valvetrain technology becomes available, so they're ALWAYS cutting-edge! Although we suggest measuring for piston-to-valve clearance during ANY camshaft install, every Elite Series Camshaft is designed to fit in a stock engine & stock heads with adequate clearance unless otherwise noted. These cams are designed to maximize power, reliability and valvetrain longevity. Tick Performance Turbo Stage 3 Camshaft for 4.8L & 5.3L Engines223/227 | .621"/.600" | LSA114+3 Designed for: All 4.8L & 5.3L engines, including LR4, LM7, L59, LM4, & L33Basic Operating RPM Range: 2400-6800Expected Horsepower Gains: 75RWHP+ over the stock camshaft in a well-optimized setup (the higher the boost, the higher the gains!)Stall Converter Required: Yes, 3200-3600RPM+Rear Gear Upgrade Required: Yes, 3.23 is the minimum suggestedWorks Well with Nitrous: No, designed for turbocharged applicationsWill Pass Most Smog Emissions: NoTurbocharger Size Recommendation: Single 76mm-80mm turbochargers and twin 62mm-70mm turbochargers. This camshaft is designed primarily for 5.3L engines with single 76mm-80mm+ turbochargers and twin 62mm-70mm+ turbochargers. A 4.8L engine in 90% of circumstances will not require a camshaft this large. If you are unsure whether or not your 4.8 liter engine can utilize this camshaft, please contact us before purchasing. Our Tick Performance Turbo Stage 3 4.8L & 5.3L turbo camshaft is designed for those who want to make the most power possible with single 76mm-80mm+ turbochargers and twin 62mm-70mm+ turbochargers! This camshaft will have the most noticeable idle of our three turbo camshafts (which will be much more noticeable than stock.) We strongly suggest the use of our Tick/PAC Dual Valvesprings and hardened pushrods with this camshaft (sold separately.) Hundreds of hours were spent developing this camshaft to perform precisely the way we advertise, so as a result, changes to the LSA or any other specification of this camshaft are not available.