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COMP Cams 32-602-5 Big Mutha' Thumpr Hydraulic Flat Camshaft Ford - 351C/351M/400M

(Ford F-150 1977-81, Mustang 1969-73, F-250 1977-81, Bronco 1978-82, Thunderbird 1972, 1977-79, F-350 1977-81, Galaxie 500 1969-74 + 30 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

32-602-5
6 reviews
Sale Price

$325.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The COMP Cams Big Mutha' Thumpr camshaft is engineered to deliver an aggressive, race-inspired exhaust note combined with substantial horsepower gains and a broad torque curve. This hydraulic flat tappet camshaft is specifically designed for Ford 351 Cleveland, 351 Modified, and 400 Modified engines, making it an ideal upgrade for muscle cars, street rods, and performance-oriented vehicles.

Key Specifications:

  • Advertised Duration: 242°/257° (intake/exhaust)
  • Camshaft Type: Hydraulic flat tappet
  • Application: Ford 351C, 351M, 400M engines
  • Delivers distinctive "lope" idle characteristic

Performance Features:

  • Early intake valve opening and extended exhaust duration create optimal valve overlap for aggressive idle sound
  • Broad torque curve provides strong mid-range power delivery
  • Excellent horsepower gains throughout the RPM range
  • Designed for street/strip applications with weekend track use

Installation Requirements:

  • Aftermarket torque converter with higher stall speed required for automatic transmissions
  • Lower rear gear ratio (3.73:1 or numerically higher) recommended to keep engine in powerband
  • Reduced idle vacuum requires vacuum canister, electric vacuum pump, or hydroboost for power brake systems
  • Upgraded valve springs and supporting components may be necessary

This camshaft is part of COMP Cams' legendary Thumpr series, known for delivering that unmistakable hot rod sound while maintaining street drivability. The aggressive profile is optimized for engines with aftermarket cylinder heads, headers, and performance intake manifolds.

Products specifications

Fits

Ford F-150 1977-81, Mustang 1969-73, F-250 1977-81, Bronco 1978-82, Thunderbird 1972, 1977-79, F-350 1977-81, Galaxie 500 1969-74, F-100 1977-79, Fairlane 1969-70, Ranchero 1969-79, Torino 1970-76, Falcon 1970 + 25 more models

Advertised Exhaust Duration

312

Advertised Intake Duration

294

Basic Operating RPM Range

2,500-6,400

Grind Number

295TH7

Cam Type

Hydraulic Flat Tappet

Exhaust Valve Lift

0.515

Intake Valve Lift

0.531

Exhaust Duration at .050 inch Lift

257

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL32-602-5

Engine Family

Ford 351C, 351M-400M 8 Cylinder (1970-1983)

K-Kit Upgrade

K32-602-5

AMAZON ASIN

B005H89TZW

Assembly Lubricant Included

Yes

Camshaft Gear Attachment

1-Bolt

Lifters Included

No

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.

Intake Duration at .050 Inch Lift

242

LOBE SEPARATION

107

Usage

Street/Strip

Camshaft Series

Thumpr

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Excellent service. Received the part the day after I ordered it. Best price I could find also.<br>Thanks

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Easy order placement, fast shipment

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