Performance Usage, Good Mid-Range Torque and Hp, Bracket Racing; Pro, Pro Et, Super Et, Etc. , Auto Trans W/Race Converter, 11. 5 To 12. 5 Compression Ratio Advised. Basic Rpm 4200-7200. Crane Saturday Night Specials Are Hydraulic and Mechanical ("Solid") Lifter Cam Kits For Rules-Limited Oval Track Racing and Et-Bracket Drag Racing Applications. For Oval Track Racing They Produce Maximum Off-The-Corner Torque, With Strong Upper-Rpm Horsepower To Pull The Straightaways. For Drag Racing They Produce Maximum Torque, For Starting Line Launch and The Upper Rpm Power To Pull Through The Gears.Pit Stop USA offers Crane Cams Saturday Night Special Solid Racing Camshaft - Grind#: F-256/3634-2S-5 - Advertised Duration 292°, 300/ Lift .545" In, .563" Ex/ SB Chevy 111411 at low everyday prices. Be sure to check out all of our products from Crane Cams including Crane Cams Solid Cams - Small Block Chevy.