COMP Cams Camshaft Set Thumpr 283THR7 Retro-Fit Hydraulic Roller 1900-5600 RPM 351W

Available with camshaft only, camshaft and lifter kit, camshaft and gear kit or in a complete kit.

This retro-fit hydraulic roller camshaft will fit Ford 351W V8 engines from 1969-1995.

Muscle car sound is back and nastier than ever. Thumpr Cams deliver incredible exhaust lope and impressive performance. Let's face it, few things serve to grab our attention more than a car with a thumping, high performance idle. Although the cam design gurus at COMP Cams designed the Thumpr series of camshafts to deliver the meanest-sounding idle on the block, they weren't about to skimp in the horsepower department in order to make it happen! Even the mildest Thumpr Cam profile produced significant horsepower and torque increases when put to the test in the COMP Performance Group research and development center. So rest assured that all of the muscle car attitude that your Thumpr-equipped ride will be sporting is going to be backed up by the proven performance that you have come to expect from the horsepower experts at COMP Cams.

These camshafts provide the perfect combination of an early intake valve opening, long exhaust duration and a generous amount of intake and exhaust overlap to maximize your engine's nasty-idling characteristics without negatively impacting streetability. Without question, Thumpr cams are in a class by themselves when it comes to serious "seat of the pants" performance and aggressive idle.

The Thumpr 283THR7 is a high performance street camshaft with a choppy/thumping idle. A stock torque converter is acceptable with this camshaft, but works best with a 2000+ stall torque converter and gears.

Camshaft Specifications:
- RPM Range: 1900 to 5600
- Valve Timing: 0.006
- Lobe separation (degrees): 107
- Intake Centerline (degrees): 102
- Valve Lash: Hydraulic
- Duration: Intake 283/Exhaust 303
- Duration @ .050" Lift: Intake 227/Exhaust 241
- Valve Lift: Intake 0.531/Exhaust 0.515
- Lobe Lift: Intake 0.332/Exhaust 0.322

Options Include:
- Camshaft (356008) Only
- Camshaft and Lifter Kit - Camshaft (356008), Lifters and Assembly Lube
- Camshaft and Gear Kit - Camshaft (356008), Lifters, Gear Drive and Assembly Lube
- Complete Kit - Camshaft (356008), Lifters, Timing Chain Set, Valve Springs, Valve Spring Retainers, Valve Locks, Valve Stem Seals and Assembly Lube

*This camshaft requires the use of COMP Cams Hydraulic Roller Lifters (893116).