COMP Cams

Big Mutha' Thumpr 243/257 Hydraulic Roller Cam for Chevrolet Small Block

Part Number 12-602-8 (132700187)

Package contents: 1 Each per Box

Select vehicle for guaranteed fit

$765.21

Out of stock

Description

WARNING: Camshaft Optimized for use with a Melanized or Nitrided distributor Gear. Not compatible with cast or Steel Gears without similar surface treatments. Failure to utilize the proper distributor Gear will void all warranties and/or return policies.

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 dd
Advertised Intake Duration	299 dd
Amazon ASIN	B000V9GBUS
Assembly Lubricant Included	No
Barcode	00036584148401
Basic Operating RPM Range	2,500-6,200 r3
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 And Lifter Kit Upgrade	CL12-602-8
Cam Type	Hydraulic Roller
Cam, Lifter And Gear Drive Upgrade	GK12-602-8
Camshaft Gear Attachment	3
Camshaft Material	Austempered Ductile Iron
Camshaft Series	Thumpr
Country Of Origin	USA
Dimensions	24.6" x 3" x 2.85"
Engine Family	Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Exhaust Duration At .050 Inch Lift	257 dd
Exhaust Valve Lift	0.517 in
Grind Number	299THR7
Intake Duration At .050 Inch Lift	243 dd
Intake Valve Lift	0.531 in
K-Kit Upgrade	K12-602-8
Lifter Type	Hydraulic Roller
Lifters Included	No
Lobe Separation	107 dd
Size	Small
Street Legal	Yes - Except CA
Usage	Street/Strip
Valve Springs Required	Yes
Weight	9.565 lbs

Warranty

12 Months

Videos and guides

Catalog PDF Catalog PDF

About COMP Cams

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.

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