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Photo of Camshaft, Comp Cams Thumpr, Mutha Thumpr, BBC, Hyd Roller
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Comp Cams

Camshaft, Comp Cams Thumpr, Mutha Thumpr, BBC, Hyd Roller

Vehicle Specific View fitment for 4 models
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Part# CC16018
Mfg# 11-601-8
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$418.99

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List Price: $461.95
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Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain always puts the engine in its powerband. Additionally, Thumpr camshafts typically deliver reduced vacuum at idle, making a vacuum canister, pump or hydroboost a requirement for vehicles running power brakes.

Notes

  • APPLICATION FOOTNOTES: [7] Stock springs cannot be used. [10] Requires thrust button & wear plate. [46] Must use bronze tip fuel pump push rod when using high pressure or high volume pump.
  • This item is not eligible for any further discounts or promotional pricing.
  • SHIP NOTE: This item is SPECIAL ORDER and will drop-ship from the manufacturer. While the majority of drop ship orders experience no delays, please be advised that OPGI does not control delivery times.
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This product is not legal for street use on an emissions-controlled vehicle. It may be used on dedicated competition or pre-pollution-controlled vehicles only. Learn More
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1964–1977 Chevrolet Chevelle Big-Block Gen IV/V - hydraulic roller [7, 10, 46]
1964–1987 Chevrolet El Camino 1964–1977: Big-Block Gen IV/V - hydraulic roller [7, 10, 46]
1978–1987: Camshaft Only - hydraulic roller [7, 10, 46]
1978–1983 Chevrolet Malibu Camshaft Only - hydraulic roller [7, 10, 46]
1970–1988 Chevrolet Monte Carlo 1970–1977: Big-block Gen IV/V - hydraulic roller [7, 10, 46]
1978–1988: Camshaft Only - hydraulic roller [7, 10, 46]
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Camshaft, Comp Cams Thumpr, Mutha Thumpr, BBC, Hyd Roller
Comp Cams Camshaft, Comp Cams Thumpr, Mutha Thumpr, BBC, Hyd Roller