Big Mutha' Thumpr 242/257 Hydraulic Flat Cam for Oldsmobile 260-455

Part Number 42-602-5 (132703620)

Package contents: 1 Each per Box

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Description

Big Mutha' Thumpr 242/257 Hydraulic Flat Cam for Oldsmobile 260-455. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, Gears and headers, very rough idle.

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	312 dd
Advertised Intake Duration	294 dd
Amazon ASIN	B005H89WWW
Assembly Lubricant Included	Yes
Barcode	00036584213208
Basic Operating RPM Range	2,500-6,400 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	CL42-602-5
Cam Type	Hydraulic Flat Tappet
Camshaft Gear Attachment	1
Camshaft Material	Cast Iron
Camshaft Series	Thumpr
Country Of Origin	USA
Dimensions	24.5" x 3" x 2.75"
Engine Family	Oldsmobile 260-455 c.i. 8 Cylinder (1967-1990)
Exhaust Duration At .050 Inch Lift	257 dd
Exhaust Valve Lift	0.497 in
Grind Number	295TH7
Intake Duration At .050 Inch Lift	242 dd
Intake Valve Lift	0.512 in
K-Kit Upgrade	K42-602-5
Lifter Type	Hydraulic Flat Tappet
Lifters Included	No
Lobe Separation	107 dd
Street Legal	Yes - Except CA
Usage	Street/Strip
Valve Springs Required	Yes
Weight	9.91 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