Offers more power than the 525 cams without sacrificing low end torque Extremely smooth cam lobe layout maintains quiet valve train and produces the smoothest cruise power band available Excellent bolt-in camshaft for stock to mid 96" and 103" engines and works well in 88" and 96" engines Cam is easy starting, increases throttle response and fuel mileage Responds well to increased compression ratio, performance exhaust and a high-flow air cleaner 1900-6000 RPM power range Performance valve springs are required on '99-'04 engines and performance pushrods and lifters are recommended but not required.. CAMS 543G GEAR DRV 99-06