Thumpr 243/257 Hydraulic Flat Cam for AMC 290-401

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.

COMP Cams® is the leading American manufacturer of high-quality, performance-based internal engine components, including camshafts, valve springs, rocker arms, lifters, pushrods, and other valve train components. We help our customers with innovative technological advancements through extensive research and development. Our quality workmanship and engineering ensure confidence for racers and street performance enthusiasts. COMP Cams is a proud member of the Edelbrock Group family of brands, which include Edelbrock®, FAST® (Fuel Air Spark Technology), TCI® Automotive, Russell® Performance and Lunati Power®. Headquartered in Olive Branch, Mississippi, COMP Cams remains an innovative American company focused on results-driven technology and superior customer support. We believe in the automotive lifestyle and continue to support the passion for our American pastime. For more information about the Edelbrock Group or any partner brands, visit www.edelbrockgroup.com.

Fitment

This part fits the following vehicles.

• 1967-1974 American Motors Ambassador
• 1966-1968 American Motors American
• 1968-1970, 1978-1979 American Motors AMX
• 1966 American Motors Classic
• 1978-1979 American Motors Concord
• 1972-1976 American Motors Gremlin
• 1970-1977 American Motors Hornet
• 1968-1974 American Motors Javelin
• 1967 American Motors Marlin
• 1971-1978 American Motors Matador
• 1978-1979 American Motors Pacer
• 1969 American Motors Rambler
• 1967-1968, 1970 American Motors Rebel
• 1966 American Motors Rogue
• 1979 American Motors Spirit
• 1974 Bricklin SV-1
• 1974 International 100
• 1974 International 200
• 1974-1983 Jeep Cherokee
• 1971-1981 Jeep CJ5
• 1971-1975 Jeep CJ6
• 1976-1981 Jeep CJ7
• 1972-1973 Jeep Commando
• 1984-1991 Jeep Grand Wagoneer
• 1974-1988 Jeep J10
• 1971-1973 Jeep J-100
• 1974-1988 Jeep J20
• 1970-1973 Jeep J-2500
• 1970-1973 Jeep J-2600
• 1970-1971 Jeep J-3800
• 1971-1973 Jeep J-4500
• 1971-1973 Jeep J-4600
• 1971-1973 Jeep J-4700
• 1971-1973 Jeep J-4800
• 1972-1983 Jeep Wagoneer

Features & benefits

• Melling offers a full line of OE replacement and high performance camshafts for cars, light duty, medium duty and heavy duty trucks. Melling listings include OEM applications to match the engine requirements desired including horsepower, economy and needed engine torque. Melling camshafts are developed, engineered, tested and manufactured with the highest standards of quality and materials.

Specifications

Warranty

12 Months

Videos and guides

California residents

WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

Carb Status

California carb status to be completed