Big Mutha Thumpr Hydraulic Flat Tappet Camshaft
Lift .501"/.486"
Duration 295/313
RPM Range 2500-6400

Street/Strip, need 9:1 compression 2800 + stall, intake, gears, and headers, very rough idle

Pontiac; Super Duty; SD; SD455; HO; 455 HO; Trans-Am; Catalina; Firebird; Formula; 421; 455; 400; 428; 350; 265; 301; 370; 389; 301; 287; 317; 347; Ram Air; Ram Air IV; Ram Air III; Bonneville; Grand Prix; LeMans; Parisienne; Grand Am; Century; Regal;


Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART