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COMP Cams 42-600-11 Thumpr Hydraulic Roller Camshaft for Oldsmobile 260-455

Manufacturer

Picture for manufacturer COMP Cams

Part Number

42-600-11
13 reviews
Sale Price

$608.95

1 left at this price

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Product Details

The COMP Cams Thumpr 42-600-11 hydraulic roller camshaft is specifically engineered for Oldsmobile V8 engines ranging from 260 to 455 cubic inches. This performance camshaft delivers an aggressive idle with excellent street manners and strong mid-range torque, making it ideal for muscle car restorations and street performance builds.

Key Specifications:

  • Intake Duration: 227 degrees at .050"
  • Exhaust Duration: 241 degrees at .050"
  • Hydraulic roller design for reduced friction and improved durability
  • Aggressive lope idle characteristic that defines the Thumpr series
  • Optimized for street/strip applications with automatic or manual transmissions
  • Compatible with factory fuel injection and carburetor setups

Features and Benefits:

  • Hydraulic roller lifter design eliminates the need for constant valve lash adjustments
  • Improved throttle response and torque production throughout the RPM range
  • Thumpr profile provides distinctive sound without sacrificing driveability
  • Designed to work with stock or mildly modified cylinder heads and intake manifolds
  • Requires hydraulic roller lifters, timing set, and appropriate valve springs (sold separately)

This camshaft is an excellent choice for enthusiasts seeking to enhance their Oldsmobile engine's performance while maintaining reliability and street-friendly characteristics. Professional installation and proper valvetrain component matching is recommended for optimal results.

Products specifications

Advertised Exhaust Duration

303

Basic Operating RPM Range

1,700-5,500

Grind Number

283THR7

Exhaust Valve Lift

0.515

Intake Valve Lift

0.531

Exhaust Duration at .050 inch Lift

241

Cam and Lifter Kit Upgrade

CL42-600-11

K-Kit Upgrade

K42-600-11

Engine Family

Oldsmobile 260-455 c.i. 8 Cylinder (1967-1990)

Usage

Street/Performance

Assembly Lubricant Included

No

Camshaft Gear Attachment

1-Bolt

Lifters Included

No

Valve Springs Required

Yes

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

No

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

Lifter Type

Hydraulic Roller

Intake Duration at .050 Inch Lift

227

Cam Type

Hydraulic Roller

Camshaft Material

Billet Steel

LOBE SEPARATION

107

Advertised Intake Duration

283

Camshaft Series

Thumpr

Had all items i needed.

First time

quick and easy

Good service and parts at low prices. Its great!

thanks First Time Buying

Very satisfied...quick and easy!!!

Super easy to browse web site and find the product I wanted.<br>The price was unmatched.<br>Shipping was fast and cheap.<br>Super shopping experience.

Quick and easy

very good so far

good and friendly e-market, nice prices

Ordering process was quick. Liked the Amazon link.

Stuff I was looking for was easy to find and checkout was easy. All parts were for the vehicle i selected and fit perfectly.

Great prices. Was a little hard to find bulbs for low beams, because it was not really descriptive.

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