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Big Mutha' Thumpr 243/257 Hydraulic Roller Cam

Part Number 23-602-9 (132702984)
UPC: 36584211990
Package contents: 1 Each per Box
Select vehicle for guaranteed fit
MADE IN USA
$622.95 FREE SHIPPING
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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.

  • 1959-1971 Chrysler 300
  • 1975-1978 Chrysler Cordoba
  • 1959-1975 Chrysler Imperial
  • 1959-1960, 1962-1978 Chrysler Newport
  • 1959-1978 Chrysler New Yorker
  • 1959-1960 Chrysler Saratoga
  • 1959-1977 Chrysler Town & Country
  • 1959-1961 Chrysler Windsor
  • 1963-1964 Dodge 330
  • 1963-1964 Dodge 440
  • 1962-1965 Dodge 880
  • 1970-1971 Dodge Challenger
  • 1966-1978 Dodge Charger
  • 1959, 1965-1976 Dodge Coronet
  • 1959 Dodge Custom
  • 1960-1969 Dodge Dart
  • 1961-1962 Dodge Lancer
  • 1978 Dodge Magnum
  • 1960 Dodge Matador
  • 1965-1978 Dodge Monaco
  • 1960-1973 Dodge Polara
  • 1959 Dodge Royal
  • 1975-1977 Dodge Royal Monaco
  • 1959 Dodge Sierra
  • 1968-1976 Jensen Interceptor
  • 1967-1971 Plymouth Barracuda
  • 1960-1970 Plymouth Belvedere
  • 1965-1967 Plymouth Belvedere II
  • 1970-1971 Plymouth Cuda
  • 1960-1961 Plymouth Custom
  • 1960-1963 Plymouth Fleet Special
  • 1960-1978 Plymouth Fury
  • 1968-1974 Plymouth Fury I
  • 1965-1966, 1968-1974 Plymouth Fury II
  • 1965-1974 Plymouth Fury III
  • 1972-1977 Plymouth Gran Fury
  • 1967-1971 Plymouth GTX
  • 1968-1975 Plymouth Road Runner
  • 1965-1974 Plymouth Satellite
  • 1960-1964 Plymouth Savoy
  • 1960-1961 Plymouth Sport Wagon
  • 1960-1961 Plymouth Suburban
  • 1970 Plymouth Superbird
  • 1967 Plymouth VIP

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

Advertised Exhaust Duration 319
Advertised Intake Duration 299
Amazon ASIN B005H89TN4
Assembly Lubricant Included No
Basic Operating RPM Range 2,500-6,200
C.A.R.B. E.O. Number N/A
C.A.R.B. Exempt For On-Road Vehicles? No
C.A.R.B. Exemption Reason N/A
Cam Type Hydraulic Roller
Camshaft Gear Attachment 3
Camshaft Material Billet Steel
Camshaft Series Thumpr
Country Of Origin USA
Engine Family Chrysler 383-440 c.i. 8 Cylinder (1959-1980)
Exhaust Duration At .050 Inch Lift 257
Exhaust Valve Lift 0.519
Grind Number 299THR7
Intake Duration At .050 Inch Lift 243
Intake Valve Lift 0.532
Lifter Type Hydraulic Roller
Lifters Included No
Lobe Separation 107
Street Legal Yes - Except CA
Usage Street/Strip
Valve Springs Required Yes

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

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