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COMP Cams K35-602-4 Big Mutha' Thumpr Hydraulic Flat Cam K-Kit for Ford Engine Camshaft Kit - 351W

(Ford F-150 1981-95, Mustang 1969-95, F-250 1981-95, Bronco 1981-95, Thunderbird 1977-79, F-350 1981-95, Galaxie 500 1969-74, F-100 1981 + 34 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

K35-602-4
5 reviews
Sale Price

$615.95

Estimated ship date Friday, November 20

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Product Details

The COMP Cams Big Mutha' Thumpr K35-602-4 is a complete hydraulic flat tappet camshaft kit engineered for Ford 351W small block engines seeking aggressive idle character and strong mid-range performance. With 243/257 degrees of advertised duration, this cam delivers the distinctive loping idle and aggressive sound that muscle car enthusiasts crave while maintaining excellent drivability.

Complete K-Kit Includes:

  • Hydraulic flat tappet camshaft with 243/257 duration specs
  • Hydraulic lifters matched to camshaft specifications
  • High-performance valve springs with proper seat pressure
  • Steel valve spring retainers for reliable valve control
  • Valve locks (keepers) for secure retainer installation
  • Valve stem seals to prevent oil consumption
  • Timing chain set for precise cam timing
  • Assembly lube to protect components during break-in
  • Installation instructions and COMP Cams decals

The Big Mutha' Thumpr series is designed for street performance applications where aggressive sound and appearance are priorities. This kit provides everything needed for a professional camshaft installation, eliminating the guesswork of component matching. The hydraulic flat tappet design offers simplicity and reliability while the moderate duration range ensures compatibility with stock valve train geometry and power accessories.

Ideal for street rods, muscle car restorations, and weekend cruisers running Ford 351W engines with aftermarket intake manifolds, headers, and performance exhaust systems. This cam works best with 9.0:1 or higher compression ratios and provides optimal performance in the 1,500-5,500 RPM range.

Products specifications

Fits

Ford F-150 1981-95, Mustang 1969-95, F-250 1981-95, Bronco 1981-95, Thunderbird 1977-79, F-350 1981-95, Galaxie 500 1969-74, F-100 1981, Fairlane 1969, Ranchero 1969-79, Torino 1969-76, E-350 Econoline 1975-95, Gran Torino 1972-76 + 29 more models

Advertised Intake Duration

295

Basic Operating RPM Range

2,500-6,400

Cam Type

Hydraulic Flat Tappet

Engine Family

Ford 351W 8 Cylinder (1969-1996)

Exhaust Valve Lift

0.498

Intake Valve Lift

0.512

Intake Duration at .050 Inch Lift

243

Exhaust Duration at .050 inch Lift

257

Camshaft Material

Cast Iron

Kit Type

K-Kit - Complete Kit

AMAZON ASIN

B001S1W69I

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

Lifters Included

Yes

LOBE SEPARATION

107

Valve Springs Included

Yes

Usage

Street/Strip

Advertised Exhaust Duration

313

Camshaft Series

Thumpr

Easy checkout. Would like more detailed information on item. Had to research other sites to figure it out

so far, so good. let's see when filter arrives.

Great customer service. Fast order processing. Hassle free transaction.

Great price and fast shipping! If your looking for quality brands at the best price available!!<br>

Love the company. Just wished the site had more info on parts.

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