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COMP Cams CL35-602-4 Big Mutha' Thumpr Hydraulic Flat Cam and Lifter Kit for Ford - 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 + 37 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

CL35-602-4
6 reviews
Sale Price

$397.95

In Stock (9)

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Product Details

The COMP Cams Big Mutha' Thumpr CL35-602-4 is a complete camshaft and lifter kit designed specifically for Ford 351W engines. This hydraulic flat tappet camshaft delivers an aggressive 243/257 duration split that produces the signature loping idle and hard-hitting performance that the Thumpr series is known for.

Key Specifications:

  • Advertised Duration: 243° Intake / 257° Exhaust
  • Duration @ .050": 207° Intake / 221° Exhaust
  • Valve Lift: .475" Intake / .480" Exhaust (with 1.6 rocker ratio)
  • LSA (Lobe Separation Angle): 114°
  • Hydraulic flat tappet design for reliable operation

Complete Kit Includes:

  • Camshaft
  • Hydraulic flat tappet lifters (16)
  • Assembly lube for proper break-in
  • Installation instructions
  • COMP Cams decals

This camshaft is engineered for street performance applications where you want maximum sound and strong mid-range torque. The aggressive exhaust duration creates substantial overlap for that distinctive choppy idle, while still maintaining good vacuum for power brakes and accessories. Best suited for engines with 9.0:1 to 10.5:1 compression ratio, aftermarket torque converter (2,400-3,000 stall recommended), and performance exhaust headers.

The Big Mutha' Thumpr series takes the popular Thumpr concept to the next level with even more aggressive profiles for enthusiasts who want maximum idle attitude with strong acceleration. COMP Cams uses premium materials and precision manufacturing to ensure durability and consistent performance.

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, F-250 Pickup 1981-95, Fairlane 1969, Ranchero 1969-79, Torino 1969-76, F-350 Pickup 1981-95 + 32 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)

Kit Type

Cl-Kit - Cam and Lifter Kit

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

AMAZON ASIN

B002EE31JC

Assembly Lubricant Included

Yes

Camshaft Gear Attachment

1-Bolt

Valve Springs Required

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

Locks Included

No

Lifters Included

Yes

Retainers Included

No

Timing Chain and Gears Included

No

LOBE SEPARATION

107

Usage

Street/Strip

Advertised Exhaust Duration

313

Valve Stem Seals Included

No

Camshaft Series

Thumpr

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