The Freeway Flyer, great camshafts for those who want more top end 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 mild 96in. and 103in. engines and works well in 88in. and 95in. 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 Performance valve springs are required on 99-04 engines and performance pushrods and lifters are recommended but not required 1,900 - 6,000 rpm power range Intake: 543 Valve Lift, 15 Degrees Open, 43 Degrees Close, 238 Degrees Duration at .053in, .160in. Lift at TDC, 104 Degrees Lobe Centerline Exhaust: 574 Valve Lift, 56 Degrees Open, 12 Degrees Close, 248 Degrees Duration at .053in, .174in Lift at TDC, 112 Degrees Lobe Centerline