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Thumpr 227/241Hydraulic Roller, Ford 221-302

Part Number 31-600-9 (132973077)
MADE IN USA
$562.95
Out of stock

Description

The COMP Cams Thumpr camshaft delivers a signature lopey idle, strong low- to mid-RPM torque, and improved horsepower, making it ideal for street/strip builds seeking aggressive sound, throttle response, and classic muscle performance. Designed for high-performance street applications, it provides an unmistakable idle quality while pairing exceptionally well with popular upgrades like the Edelbrock RPM Air Gap intake manifold and TCI Saturday Night Special torque converter. Built withfull-size base circles for added durability, this cam works seamlessly with COMP Cams Evolution hydraulic roller tappets and eliminates the need for dog bones and lifter retainers—components never intended for pre-1985 applications. This camshaft supersedes part number 31-600-8, delivering proven performance and simplified valvetrain compatibility in one upgraded design.

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.

Features & benefits

  • Eliminates the need for dog bones and lifter retainers, which were never intended for use in pre-1985 applications.
  • Features full-size base circles, works seamlessly with our Comp Cams Evolution hydraulic roller tappets.
  • Supersedes 31-600-8
  • 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

Advance 5
Advertised Exhaust Duration 303
Advertised Intake Duration 283
Basic Operating RPM Range 1900 - 5600
Cam Type Hydraulic Roller
Camshaft Series Thumpr
Computer Controlled Compatible No
Country Of Origin USA
Cross Sell / Upsell Part Numbers 89311-16, 1431-16, 431M, 26986-16
Direct Injection No
Engine Platform Ford Small Block
Exhaust Duration At .050 Inch Lift 241
Exhaust Lobe Lift 0.322
Exhaust Valve Lash Hyd
Exhaust Valve Lift With Factory Rocker Arm Ratio 0.515
Factory Rocker Ratio 1.6
Firing Order FS/FF
Fuel Management Strategy Compatible No
Intake Centerline 102
Intake Duration At .050 Inch Lift 227
Intake Lobe Lift 0.332
Intake Valve Lash Hyd
Intake Valve Lift With Factory Rocker Arm Ratio 0.531
Lifter Type Roller Tappet
Lobe Separation 107
Material Billet Steel
Valve Springs Required Yes
VVT Compatible No

Videos and guides

Magnuson-Moss Warranty Act

Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)).

California residents

WARNING: This product can expose you to Zinc Dithiophosphate, Paraffinic Pertroleum Oil, Anthraquinone Dye, known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.

Carb Status

California carb status to be completed

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