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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.
Catalog
User 1
This Part Fits:
Catalog
User 1
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1987-1991 | Avanti | II | Base |
| 1991-1996 | Buick | Commercial Chassis | Base |
| 1992-1993 | Buick | Roadmaster | Base |
| 1991-1993 | Buick | Roadmaster | Estate Wagon |
| 1992-1993 | Buick | Roadmaster | Limited |
| 1990-1992 | Cadillac | Brougham | Base |
| 1990-1992 | Cadillac | Brougham | d'Elegance |
| 1994-1996 | Cadillac | Commercial Chassis | Base |
| 1992-1996 | Cadillac | Commercial Chassis | Brougham |
| 1993 | Cadillac | Fleetwood | Base |
| 1993 | Cadillac | Fleetwood | Brougham |
| 1994 | Chevrolet | Blazer | Base |
| 1992-1993 | Chevrolet | Blazer | Cheyenne |
| 1987 | Chevrolet | Blazer | Custom Deluxe |
| 1988-1991 | Chevrolet | Blazer | Scottsdale |
| 1987-1994 | Chevrolet | Blazer | Silverado |
| 1994 | Chevrolet | Blazer | Silverado Sport |
| 1994-1995 | Chevrolet | C1500 | Base |
| 1988-1995 | Chevrolet | C1500 | Cheyenne |
| 1988-1992 | Chevrolet | C1500 | Scottsdale |
| 1988-1995 | Chevrolet | C1500 | Silverado |
| 1990-1995 | Chevrolet | C1500 | WT |
| 1992-1995 | Chevrolet | C1500 Suburban | Base |
| 1995 | Chevrolet | C1500 Suburban | LS |
| 1995 | Chevrolet | C1500 Suburban | LT |
| 1992-1994 | Chevrolet | C1500 Suburban | Silverado |
| 1994-1995 | Chevrolet | C2500 | Base |
| 1988-1995 | Chevrolet | C2500 | Cheyenne |
| 1988-1992 | Chevrolet | C2500 | Scottsdale |
| 1988-1995 | Chevrolet | C2500 | Silverado |
| 1994-1995 | Chevrolet | C2500 | WT |
| 1992-1995 | Chevrolet | C2500 Suburban | Base |
| 1995 | Chevrolet | C2500 Suburban | LS |
| 1995 | Chevrolet | C2500 Suburban | LT |
| 1992-1994 | Chevrolet | C2500 Suburban | Silverado |
| 1994-1995 | Chevrolet | C3500 | Base |
| 1988-1995 | Chevrolet | C3500 | Cheyenne |
| 1988-1992 | Chevrolet | C3500 | Scottsdale |
| 1988-1995 | Chevrolet | C3500 | Silverado |
| 1988 | Chevrolet | Camaro | Base |
| 1987-1990 | Chevrolet | Camaro | Iroc-Z |
| 1987 | Chevrolet | Camaro | LT |
| 1989-1992 | Chevrolet | Camaro | RS |
| 1992 | Chevrolet | Camaro | RS Heritage Edition |
| 1987 | Chevrolet | Camaro | Sport |
| 1987,1991-1992 | Chevrolet | Camaro | Z28 |
| 1992 | Chevrolet | Camaro | Z28 Heritage Edition |
| 1987-1992 | Chevrolet | Caprice | Base |
| 1987-1993 | Chevrolet | Caprice | Classic |
| 1987-1990 | Chevrolet | Caprice | Classic Brougham |
| 1993 | Chevrolet | Caprice | Classic LS |
| 1987-1990 | Chevrolet | Caprice | Classic LS Brougham |
| 1991-1993 | Chevrolet | Caprice | Classic LTZ |
| 1991-1994 | Chevrolet | Commercial Chassis | Base |
| 1988 | Chevrolet | Corvette | 35th Anniversary Edition |
| 1987-1991 | Chevrolet | Corvette | Base |
| 1990-1991 | Chevrolet | Corvette | ZR-1 |
| 1987 | Chevrolet | El Camino | Base |
| 1987 | Chevrolet | El Camino | SS |
| 1998 | Chevrolet | Express 1500 | Base |
| 1996 | Chevrolet | Express 2500 | LS |
| 1998 | Chevrolet | Express 3500 | Base |
| 1987-1995 | Chevrolet | G10 | Beauville |
| 1987 | Chevrolet | G10 | Bonaventure |
| 1987-1995 | Chevrolet | G10 | Chevy Van |
| 1987-1995 | Chevrolet | G10 | Sportvan |
| 1987-1995 | Chevrolet | G20 | Beauville |
| 1987-1995 | Chevrolet | G20 | Chevy Van |
| 1987-1995 | Chevrolet | G20 | Sportvan |
| 1987-1996 | Chevrolet | G30 | Beauville |
| 1987-1996 | Chevrolet | G30 | Chevy Van |
| 1987-1996 | Chevrolet | G30 | Hi-Cube |
| 1987-1996 | Chevrolet | G30 | Sportvan |
| 1994-1995 | Chevrolet | K1500 | Base |
| 1988-1995 | Chevrolet | K1500 | Cheyenne |
| 1988-1992 | Chevrolet | K1500 | Scottsdale |
| 1988-1995 | Chevrolet | K1500 | Silverado |
| 1991 | Chevrolet | K1500 | Sport |
| 1990-1995 | Chevrolet | K1500 | WT |
| 1992-1995 | Chevrolet | K1500 Suburban | Base |
| 1995 | Chevrolet | K1500 Suburban | LS |
| 1995 | Chevrolet | K1500 Suburban | LT |
| 1992-1994 | Chevrolet | K1500 Suburban | Silverado |
| 1994-1995 | Chevrolet | K2500 | Base |
| 1988-1995 | Chevrolet | K2500 | Cheyenne |
| 1988-1992 | Chevrolet | K2500 | Scottsdale |
| 1988-1995 | Chevrolet | K2500 | Silverado |
| 1994-1995 | Chevrolet | K2500 | WT |
| 1992-1995 | Chevrolet | K2500 Suburban | Base |
| 1995 | Chevrolet | K2500 Suburban | LS |
| 1995 | Chevrolet | K2500 Suburban | LT |
| 1992-1994 | Chevrolet | K2500 Suburban | Silverado |
| 1994-1995 | Chevrolet | K3500 | Base |
| 1988-1995 | Chevrolet | K3500 | Cheyenne |
| 1988-1992 | Chevrolet | K3500 | Scottsdale |
| 1988-1995 | Chevrolet | K3500 | Silverado |
| 1987-1988 | Chevrolet | Monte Carlo | Base |
| 1987-1988 | Chevrolet | Monte Carlo | LS |
| 1987-1988 | Chevrolet | Monte Carlo | SS |
| 1987-1989 | Chevrolet | P20 | Base |
| 1987-1989 | Chevrolet | P20 | Step-Van |
| 1987-1998 | Chevrolet | P30 | Base |
| 1987-1990 | Chevrolet | P30 | Step-Van |
| 1987 | Chevrolet | R10 | Custom Deluxe |
| 1987 | Chevrolet | R10 | Scottsdale |
| 1987 | Chevrolet | R10 | Silverado |
| 1987 | Chevrolet | R10 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | R10 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | R10 Suburban | Silverado |
| 1989-1991 | Chevrolet | R1500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | R1500 Suburban | Silverado |
| 1988 | Chevrolet | R20 | Cheyenne |
| 1987-1988 | Chevrolet | R20 | Custom Deluxe |
| 1987-1988 | Chevrolet | R20 | Scottsdale |
| 1987-1988 | Chevrolet | R20 | Silverado |
| 1987 | Chevrolet | R20 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | R20 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | R20 Suburban | Silverado |
| 1989-1991 | Chevrolet | R2500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | R2500 Suburban | Silverado |
| 1988 | Chevrolet | R30 | Cheyenne |
| 1987-1988 | Chevrolet | R30 | Custom Deluxe |
| 1987-1988 | Chevrolet | R30 | Scottsdale |
| 1987-1988 | Chevrolet | R30 | Silverado |
| 1989-1991 | Chevrolet | R3500 | Cheyenne |
| 1989-1990 | Chevrolet | R3500 | Scottsdale |
| 1989-1991 | Chevrolet | R3500 | Silverado |
| 1995 | Chevrolet | Tahoe | Base |
| 1995 | Chevrolet | Tahoe | LS |
| 1995 | Chevrolet | Tahoe | LT |
| 1987 | Chevrolet | V10 | Custom Deluxe |
| 1987 | Chevrolet | V10 | Scottsdale |
| 1987 | Chevrolet | V10 | Silverado |
| 1987 | Chevrolet | V10 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | V10 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | V10 Suburban | Silverado |
| 1989-1991 | Chevrolet | V1500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | V1500 Suburban | Silverado |
| 1987 | Chevrolet | V20 | Custom Deluxe |
| 1987 | Chevrolet | V20 | Scottsdale |
| 1987 | Chevrolet | V20 | Silverado |
| 1987 | Chevrolet | V20 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | V20 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | V20 Suburban | Silverado |
| 1989-1991 | Chevrolet | V2500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | V2500 Suburban | Silverado |
| 1988 | Chevrolet | V30 | Cheyenne |
| 1987-1988 | Chevrolet | V30 | Custom Deluxe |
| 1987-1988 | Chevrolet | V30 | Scottsdale |
| 1987-1988 | Chevrolet | V30 | Silverado |
| 1989-1991 | Chevrolet | V3500 | Cheyenne |
| 1989-1990 | Chevrolet | V3500 | Scottsdale |
| 1989-1991 | Chevrolet | V3500 | Silverado |
| 1993 | Excalibur | Limited | Base |
| 1987-1989 | Excalibur | Phaeton | Base |
| 1988-1993 | GMC | C1500 | Sierra |
| 1994-1995 | GMC | C1500 | Sierra SL |
| 1988-1995 | GMC | C1500 | Sierra SLE |
| 1994-1995 | GMC | C1500 | Sierra SLT |
| 1988-1993 | GMC | C1500 | Sierra SLX |
| 1994-1995 | GMC | C1500 | Sierra Special |
| 1992-1995 | GMC | C1500 Suburban | Base |
| 1992-1995 | GMC | C1500 Suburban | SLE |
| 1995 | GMC | C1500 Suburban | SLT |
| 1988-1993 | GMC | C2500 | Sierra |
| 1994-1995 | GMC | C2500 | Sierra SL |
| 1988-1995 | GMC | C2500 | Sierra SLE |
| 1994-1995 | GMC | C2500 | Sierra SLT |
| 1988-1993 | GMC | C2500 | Sierra SLX |
| 1992-1995 | GMC | C2500 Suburban | Base |
| 1992-1995 | GMC | C2500 Suburban | SLE |
| 1995 | GMC | C2500 Suburban | SLT |
| 1988-1993 | GMC | C3500 | Sierra |
| 1994-1995 | GMC | C3500 | Sierra SL |
| 1988-1995 | GMC | C3500 | Sierra SLE |
| 1994-1995 | GMC | C3500 | Sierra SLT |
| 1988-1993 | GMC | C3500 | Sierra SLX |
| 1987 | GMC | Caballero | Base |
| 1987 | GMC | Caballero | Diablo |
| 1987-1995 | GMC | G1500 | Rally |
| 1987-1995 | GMC | G1500 | Rally STX |
| 1987-1995 | GMC | G1500 | Vandura |
| 1987-1995 | GMC | G2500 | Rally |
| 1987-1995 | GMC | G2500 | Rally STX |
| 1987-1995 | GMC | G2500 | Vandura |
| 1987-1996 | GMC | G3500 | Magnavan |
| 1987-1996 | GMC | G3500 | Rally |
| 1987-1996 | GMC | G3500 | Rally Camper Special |
| 1987-1988 | GMC | G3500 | Rally Custom |
| 1987-1996 | GMC | G3500 | Rally STX |
| 1987-1996 | GMC | G3500 | Vandura |
| 1987-1996 | GMC | G3500 | Vandura Special |
| 1987-1991 | GMC | Jimmy | Base |
| 1987-1990 | GMC | Jimmy | Sierra Classic |
| 1988-1993 | GMC | K1500 | Sierra |
| 1994-1995 | GMC | K1500 | Sierra SL |
| 1988-1995 | GMC | K1500 | Sierra SLE |
| 1995 | GMC | K1500 | Sierra SLS |
| 1994-1995 | GMC | K1500 | Sierra SLT |
| 1988-1993 | GMC | K1500 | Sierra SLX |
We use UPS, FedEx, DHL, and USPS for deliveries. We are not responsible for any shipping problems and shall not be held liable for any "reasonable" delay beyond our advertised delivery time-frames. Shipment by Ground Courier can take up to 15 business days for delivery. Express Courier can take up to 3 business days for delivery. Shipping time frames are once the order has been processed. Due to high demand, order processing can take 5 to 7 business days.
