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 Street Heat Stage 3 "POLLUTER" Camshaft for 4.8L & 5.3L Engines234/239 | .615”/.610” | LSA112+2 Designed for: All 4.8 & 5.3 Engines including LR4, LM7, L59, LM4, & L33 with Cathedral Port HeadsBasic Operating RPM Range: 2800-6800Expected Horsepower Gains: 45-55RWHP over the stock camshaft in a well-optimized setupExpected Torque Gains: 40-50RWTQ over the stock camshaft in a well-optimized setupAftermarket Headers Required: Yes, Longtube StyleStall Converter Required: Yes, 3600+RPMRear Gear Upgrade Required: NoWorks Well with Nitrous: Yes (shot size less than 200)Will Pass Most Smog Emissions: No New for 2017! For years, the Polluter V1 was our flagship camshaft (sold only for LS1 & LS6 engines), known and respected industry-wide as a maximum effort heavy-hitter that absolutely LOVES nitrous. Our brand new Street Heat Stage 3 POLLUTER Camshaft for 4.8L & 5.3L Engines successfully carries on the Polluter name and mixes it with the newest, most advanced technology available! The result? HUGE power gains, impressive valvetrain longevity and surprisingly good street manners (with a good dynotune, of course.) This camshaft (like all of our Elite Series Camshafts) is designed to fit stock engine/cylinder head combinations without the need to clearance your pistons, but since it is a TIGHT fit, we require that you verify piston-to-valve clearance during install. We strongly suggest the use of our Tick/PAC Dual Valvesprings and hardened pushrods with this camshaft (sold separately.) Countless 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.