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COMP Cams 35-602-8 Big Mutha' Thumpr Hydraulic Roller Camshaft Ford - for 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)

Part of: COMP Cams Big Mutha' Thumpr Hydraulic Roller Camshaft Ford

Other options in this family: COMP Cams 34-602-9 COMP Cams 20-603-9 COMP Cams 23-602-9 COMP Cams 32-602-8

Manufacturer

Picture for manufacturer COMP Cams

Part Number

35-602-8
4 reviews
Sale Price

$577.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The COMP Cams Big Mutha' Thumpr hydraulic roller camshaft is engineered for Ford 351W engines seeking maximum performance with an aggressive lope at idle. This camshaft features 243/257 degrees of advertised duration, delivering substantial power gains in the midrange to upper RPM range while producing the signature Thumpr sound.

Key Specifications:

  • Advertised Duration: 243° Intake / 257° Exhaust
  • Duration at .050": 218° Intake / 232° Exhaust
  • Valve Lift: .525" Intake / .540" Exhaust (with 1.6:1 rocker ratio)
  • Lobe Separation Angle: 107°
  • Hydraulic roller design for reduced friction and increased durability
  • Optimized for engines with 9.0:1 to 10.5:1 compression ratio

Performance Characteristics:

  • Aggressive choppy idle with pronounced exhaust note
  • Strong midrange to top-end power delivery (2,000-6,000 RPM range)
  • Designed for street/strip applications with aftermarket converters
  • Requires aftermarket stall converter (2,800-3,200 RPM recommended)
  • Works best with headers, performance intake, and carburetor or EFI

This camshaft is specifically designed for small block Ford 351W engines and requires compatible hydraulic roller lifters, timing set, and valve springs. The Big Mutha' Thumpr series delivers the ultimate combination of radical sound and serious street performance for enthusiasts who want their engine to make a statement.

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

Grind Number

299THR7

Engine Family

Ford 351W 8 Cylinder (1969-1996)

Camshaft Material

Austempered Ductile Iron

Cam and Lifter Kit Upgrade

CL35-602-8

K-Kit Upgrade

K35-602-8

AMAZON ASIN

B0014EXK5S

Cam, Lifter and Gear Drive Upgrade

GK35-602-8

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.

LOBE SEPARATION

107

Camshaft Series

Thumpr

you have a good selection

Everything arrived well packaged and in good order... It was shipped promptly, but hey, no accounting for the snow storm in the NW... I think UPS calls it an "act of God"... Thanks

Ordered Monday, delivered Thursday - just as promised. Best price among all reputable on-line parts dealers. Saved at least a third off the most popular dealers.

Great selection and fast shipping. Not to meantion the lowest prices anywhere on the net.

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