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COMP Cams CL35-601-4 Mutha' Thumpr Hydraulic Flat Cam And Lifter Kit For Ford - 235/249 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

CL35-601-4
5 reviews
Sale Price

$397.95

3 left at this price

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Usually delivered within 2 days

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Product Details

The COMP Cams Mutha' Thumpr CL35-601-4 is a complete hydraulic flat tappet camshaft and lifter kit engineered specifically for Ford 351W small block engines. This cam delivers an aggressive idle with excellent throttle response and strong mid-range torque, making it ideal for street performance applications where you want that classic muscle car sound combined with reliable street manners.

Camshaft Specifications:

  • Advertised Duration: 235°/249° (Intake/Exhaust)
  • Duration @ .050": 207°/221° (Intake/Exhaust)
  • Valve Lift: .444"/.466" (Intake/Exhaust) with 1.6:1 rocker ratio
  • Lobe Separation Angle: 107°
  • Hydraulic flat tappet design for quiet, dependable operation
  • Produces that signature "Thumpr" lopey idle and aggressive exhaust note

Complete Kit Includes:

  • Hydraulic flat tappet camshaft
  • 16 hydraulic flat tappet lifters
  • Assembly lube for proper break-in
  • COMP Cams decals
  • Detailed installation instructions

The Mutha' Thumpr series is designed for street/strip vehicles with aftermarket converters (2,200+ stall recommended), headers, and intake modifications. This cam works best with compression ratios between 9.0:1 and 10.5:1 and requires valve spring upgrades for proper operation. The aggressive exhaust lobe profile creates the distinctive choppy idle that turns heads while still maintaining excellent drivability and vacuum for power brakes.

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 Exhaust Duration

305

Basic Operating RPM Range

2,200-6,100

Cam Type

Hydraulic Flat Tappet

Engine Family

Ford 351W 8 Cylinder (1969-1996)

Kit Type

Cl-Kit - Cam and Lifter Kit

Exhaust Valve Lift

0.486

Intake Valve Lift

0.501

Exhaust Duration at .050 inch Lift

249

Camshaft Material

Cast Iron

AMAZON ASIN

B002EE7CLU

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

Intake Duration at .050 Inch Lift

235

Lifters Included

Yes

Retainers Included

No

Timing Chain and Gears Included

No

LOBE SEPARATION

107

Usage

Street/Strip

Advertised Intake Duration

287

Valve Stem Seals Included

No

Camshaft Series

Thumpr

Prices were good and the order shipped promptly. The email notice of shipment was a little late. It came after the order had arrived.

Product delivered as expected within 4 days. Lowest price on the web. No complaints.

This was an easy transaction, keep me notified thoughout the entire shipment. Price is what got my attention in the first place. I will be back for future needs.

Nobody else had part in stock. Instant shipping and a good price. Will do business again!

The shipping was prompt and the price was the best around. It arrived at my door 2 days after I ordered it. will do business with them again!

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