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COMP Cams 31-602-5 Mutha' Thumpr Hydraulic Flat Tappet Camshaft Ford - 235/249 221-302

(Ford Mustang 1964-95, Thunderbird 1977-81, 1983-88, 1991-93, Maverick 1971-77, Galaxie 500 1963-72, Fairlane 1963-70, Torino 1968-74 + 40 more models)

Part of: COMP Cams Mutha' Thumpr Hydraulic Flat Tappet Camshaft Ford

Other options in this family: COMP Cams 35-601-4 COMP Cams 34-601-5 COMP Cams 32-601-5

Manufacturer

Picture for manufacturer COMP Cams

Part Number

31-602-5
5 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 Mutha' Thumpr camshaft is designed for Ford small block 221-302 cubic inch engines seeking an aggressive idle sound with strong mid-range performance. This hydraulic flat tappet camshaft delivers the distinctive "thump" that muscle car enthusiasts crave while maintaining streetability.

Key Specifications:

  • Advertised Duration: 235° Intake / 249° Exhaust
  • Duration @ .050": 207° Intake / 221° Exhaust
  • Valve Lift: .444" Intake / .466" Exhaust (with 1.6 rocker ratio)
  • Lobe Separation Angle: 112°
  • Hydraulic flat tappet design for easy maintenance
  • Requires 2,200+ RPM stall converter and 9.0:1+ compression ratio

Performance Characteristics:

  • Aggressive choppy idle with pronounced exhaust note
  • Strong acceleration from 1,600-5,600 RPM range
  • Increased overlap for distinctive muscle car sound
  • Best suited for street/strip applications with headers and performance intake

This camshaft is part of COMP Cams' legendary Thumpr series, engineered to deliver maximum attitude with proven durability. Compatible with stock valve springs in most applications, though upgraded valve train components are recommended for optimal performance and longevity.

Products specifications

Fits

Ford Mustang 1964-95, Thunderbird 1977-81, 1983-88, 1991-93, Maverick 1971-77, Galaxie 500 1963-72, Fairlane 1963-70, Torino 1968-74, Mustang II 1975-78, Falcon 1964-70, Galaxie 1963-67, Gran Torino 1972-74, LTD 1965-86 + 35 more models

Advertised Exhaust Duration

304

Basic Operating RPM Range

2,200-6,100

Grind Number

287TH7

Cam Type

Hydraulic Flat Tappet

Engine Family

Ford 221, 260, 289, 302 c.i. 8 Cylinder (1963-1995)

Exhaust Valve Lift

0.486

Exhaust Duration at .050 inch Lift

249

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL31-602-5

K-Kit Upgrade

K31-602-5

AMAZON ASIN

B0046ZJ8GW

Usage

Street/Performance

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

235

Intake Valve Lift

0.5

LOBE SEPARATION

107

Advertised Intake Duration

287

Camshaft Series

Thumpr

They had the lowest price by far! Quick shipment! I am going back for more. Thanks!<br><br>Order 6489

so far so good we will see how soon I receive it

Best price I could find on the Internet can't go wrong with saving money

Finally I found the part I have searched all over for. Thank you autoplicity for having such a specialized part. Great customer service too. Very easy to use web site as well.

I purchased a wiring connector and some additional wiring pins. Super fast shipping. Likely to buy from again.

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