Big Mutha' Thumpr 243/257 Hydraulic Flat Cam for Pontiac 265-455

Part Number 51-602-5 (132704094)

UPC: 36584213260

Package contents: 1 Each per Box

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Description

Big Mutha' Thumpr 243/257 Hydraulic Flat Cam for Pontiac 265-455. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, Gears and headers, very rough idle.

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.

1972 Buick Centurion
1979-1981 Buick Century
1974, 1980 Buick Electra
1974, 1980 Buick Estate Wagon
1974-1975, 1977-1980 Buick LeSabre
1979-1981 Buick Regal
1974 Buick Riviera
1977 Buick Skylark
1975 Oldsmobile 98
1975 Oldsmobile Custom Cruiser
1974 Oldsmobile Cutlass
1974 Oldsmobile Cutlass Supreme
1979 Oldsmobile Delta 88
1972-1975 Oldsmobile Toronado
1957-1981 Pontiac Bonneville
1955-1981 Pontiac Catalina
1955-1958 Pontiac Chieftain
1967-1970 Pontiac Executive
1967-1981 Pontiac Firebird
1973-1975, 1978-1980 Pontiac Grand Am
1975-1977, 1979-1981 Pontiac Grand LeMans
1962-1981 Pontiac Grand Prix
1971-1978 Pontiac Grand Safari
1971-1975 Pontiac Grandville
1964-1973 Pontiac GTO
1963-1977, 1979-1981 Pontiac LeMans
1955-1966 Pontiac Star Chief
1957-1958 Pontiac Super Chief
1961-1970 Pontiac Tempest
1960-1961, 1971-1975, 1977 Pontiac Ventura

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	313
Advertised Intake Duration	295
Amazon ASIN	B005H89S1C
Assembly Lubricant Included	Yes
Basic Operating RPM Range	2,500-6,400
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	CL51-602-5
Cam Type	Hydraulic Flat Tappet
Camshaft Gear Attachment	1
Camshaft Material	Cast Iron
Camshaft Series	Thumpr
Country Of Origin	USA
Engine Family	Pontiac 265-455 C.I. 8 Cylinder (1955-1981)
Exhaust Duration At .050 Inch Lift	257
Exhaust Valve Lift	0.486
Grind Number	295TH7
Intake Duration At .050 Inch Lift	243
Intake Valve Lift	0.501
K-Kit Upgrade	K51-602-5
Lifter Type	Hydraulic Flat Tappet
Lifters Included	No
Lobe Separation	107
Street Legal	Yes - Except CA
Usage	Street/Strip
Valve Springs Required	Yes

Warranty

12 Months

Videos and guides

Catalog PDF

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