CompCams Thumpr Camsafts provide a great sound (early exhaust opening and more overlap), Great power (new lobe designs give great area and air flow) and Great mid-range response (early intake closing traps more air). Minimal engine vacuum, requires mods for any vacuum accessories such as power brakes. Designed for use only with valve train upgrades including COMP Cams® Beehive Valve Springs and roller rockers. Works best with looser converters, more rear end gear and other performance engine modifications.
- Cam Style:
- Hydraulic flat tappet
- Basic Operating RPM Range:
- 2,000-5,800
- Intake Duration at .050 inch Lift:
- 227
- Exhaust Duration at .050 inch Lift:
- 241
- Duration at .050 inch Lift:
- 227 int./241 exh.
- Advertised Intake Duration:
- 279
- Advertised Exhaust Duration:
- 296
- Advertised Duration:
- 279 int./296 exh.
- Intake Valve Lift with Factory Rocker Arm Ratio:
- 0.486 in.
- Exhaust Valve Lift with Factory Rocker Arm Ratio:
- 0.473 in.
- Valve Lift with Factory Rocker Arm Ratio:
- 0.486 int./0.473 exh.
- Lobe Separation (degrees):
- 107
- Computer-Controlled Compatible:
- No
- Camshaft Gear Attachment:
- 1-bolt
- Valve Springs Required:
- Yes
- Grind Number:
- 279TH7
- Camshaft Manufacturers Description:
- Hydraulic Flat Tappet - Thumpr: High performance street, stock converter ok, best w/ 2000+ stall & gears. Choppy/thumping idle.
- Quantity:
- Sold individually.
- Notes:
- Single-bolt camshaft.
- Make:
- Mopar
- Engine Family:
- Mopar big block B
- Engine Sizes:
- 6.3L/383-6.6L/400
- Years:
- 1959-1978
- Engine Family:
- Mopar big block RB
- Engine Sizes:
- 6.3L/383-7.2L/440
- Years:
- 1959-1979
