543 CAMS - The Freeway Flyer, a great camshaft for those who want more top end power than our 525 cam 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 mild 96, 103, 106 and 107 engines and works well in 88 & 95 engines. This cam is easy starting, increases throttle response and fuel mileage. Responds well to increased compression ratio, performance exhaust and a high flow air cleaner. Performance valve springs are required on 99-04 engines and performance pushrods and lifters are recommended but not required. Feulings go to cam for 96 and 103 engines. RPM 1,900 - 6,000