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Thumpr Hydraulic Flat Tappet Camshaft <br> 66-91 American Motors 290-401
COMP CAMS
®

Thumpr Hydraulic Flat Tappet Camshaft
66-91 American Motors 290-401

SKU: CCA-10-600-5
$341.95

Availability: Out Of Stock

Compatibility
Specification
Product Description Reviews
Description:

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.

Features:

  • Camshaft Series: Thumpr
  • Lobe Separation: 107 DD
  • Intake Valve Lift: 0.491 IN
  • Exhaust Valve Lift: 0.476 IN
  • Lifters Included: No
  • Valve Springs Required: Yes
  • Assembly Lubricant Included: Yes
  • Camshaft Gear Attachment: 1-Bolt
  • Camshaft Material: Cast Iron
  • Engine Family: American Motors 290-401 c.i. 8 Cylinder (1966-1991)
  • Cam and Lifter Kit Upgrade: CL10-600-5
  • Usage: Street/Strip
  • K-Kit Upgrade: K10-600-5
  • Lifter Type: Hydraulic Flat Tappet
  • Cam Type: Hydraulic Flat Tappet
  • Grind Number: 279TH7
  • Grind Number: 279TH7
  • Basic Operating RPM Range: 2,000-5,800
  • Intake Duration at .050 Inch Lift: 227 DD
  • Exhaust Duration at .050 inch Lift: 241 DD
  • Advertised Intake Duration: 279 DD
  • Advertised Exhaust Duration: 296 DD


  • Package Includes:

  • Engine Camshaft


  • WARNING: This product contains chemicals known to the State. For more information go to https://www.p65warnings.ca.gov/