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COMP Cams K42-601-5 Mutha' Thumpr 234/249 Hydraulic Flat Cam K-Kit for Oldsmobile V8

(Chevrolet Camaro 1972-74, Corvette 1972, Impala 1972-74, Malibu 1973, Chevelle 1973, Caprice 1973, 1986-90, Nova 1972-74, Bel Air 1972-74 + 44 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

K42-601-5
5 reviews
Sale Price

$726.95

Estimated ship date Wednesday, November 25

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Product Details

The COMP Cams Mutha' Thumpr K42-601-5 is a complete camshaft kit engineered for Oldsmobile 260-455 cubic inch V8 engines. This aggressive hydraulic flat tappet camshaft delivers the signature Thumpr lope and aggressive idle that muscle car enthusiasts crave, while providing strong mid-range torque and excellent throttle response.

Camshaft Specifications:

  • Advertised Duration: 234°/249° intake/exhaust
  • Hydraulic flat tappet design for traditional pushrod applications
  • Optimized for street performance with aggressive sound
  • Compatible with Oldsmobile 260, 307, 330, 350, 403, 425, and 455 engines

Complete K-Kit Includes:

  • Mutha' Thumpr camshaft
  • Hydraulic flat tappet lifters (16)
  • Performance valve springs
  • Spring retainers
  • Valve locks (keepers)
  • Valve stem seals
  • Timing chain set
  • Assembly lube for proper break-in
  • Installation instructions and COMP Cams decals

This all-in-one kit provides everything needed for a professional camshaft installation, eliminating the guesswork of component matching. The included performance valve springs are specifically matched to the camshaft's lift and duration characteristics, ensuring reliable valve train operation. Ideal for street rods, muscle cars, and weekend cruisers seeking that classic hot rod sound with improved performance.

Products specifications

Fits

Chevrolet Camaro 1972-74, Corvette 1972, Impala 1972-74, Malibu 1973, Chevelle 1973, Caprice 1973, 1986-90, Nova 1972-74, Bel Air 1972-74, Laguna 1973-74; Pontiac Firebird 1977-79, Grand Prix 1977, Bonneville 1972, 1977-81 + 40 more models

Advertised Exhaust Duration

304

Advertised Intake Duration

286

Basic Operating RPM Range

2,200-6,100

Cam Type

Hydraulic Flat Tappet

Exhaust Valve Lift

0.486

Exhaust Duration at .050 inch Lift

249

Camshaft Material

Cast Iron

Kit Type

K-Kit - Complete Kit

Engine Family

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

AMAZON ASIN

B005H89SRG

Assembly Lubricant Included

Yes

Lifter Type

Hydraulic Flat Tappet

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.

Gaskets Included

No

Intake Duration at .050 Inch Lift

234

Lifters Included

Yes

Intake Valve Lift

0.5

LOBE SEPARATION

107

Valve Springs Included

Yes

Usage

Street/Strip

Camshaft Series

Thumpr

Extremely FAST shipping. Ordered K&N air intake on Tuesday evening and item was delivered Thursday morning!! Item as advertised. The package got here before UPS could upsate the tracking number!! Great service!!

Great price and fast shipping! Tech support helped me before the sale to make sure I was ordering the right part

Autoplicity got my air filters shipped next day after I placed my order. Cheap prices, and good customer is what they stand for. I will definitely be looking at their site in the future for my car needs. <br>

Fast and Easy

Great prices with fast shipping

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