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COMP Cams K31-602-5 Mutha' Thumpr Hydraulic Flat Cam K-Kit Ford Engine Camshaft Kit - for 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)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

K31-602-5
15 reviews
Sale Price

$707.95

Estimated ship date Sunday, November 22

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Product Details

The COMP Cams Mutha' Thumpr K31-602-5 is a complete hydraulic flat tappet camshaft kit engineered for Ford 221-302 small block engines. This aggressive camshaft delivers a lopey idle with strong mid-range torque and excellent throttle response, making it ideal for street performance applications where sound and power matter.

Camshaft Specifications:

  • Advertised Duration: 235°/249° (Intake/Exhaust)
  • Duration @ .050": 218°/232°
  • Valve Lift: .523"/.544" (with 1.6 rocker ratio)
  • Lobe Separation Angle: 107°
  • RPM Range: 1,500-5,400
  • Hydraulic flat tappet design

Complete K-Kit Includes:

  • Hydraulic flat tappet camshaft
  • Hydraulic lifters
  • High-performance valve springs
  • Spring retainers
  • Valve locks (keepers)
  • Valve stem seals
  • Timing chain set
  • Assembly lube
  • Installation instructions and decals

This kit provides everything needed for a professional camshaft installation, eliminating the guesswork of component matching. The Mutha' Thumpr grind is known for its distinctive exhaust note and strong street performance characteristics, making it a popular choice for muscle car restorations and hot rod builds. Recommended for engines with 9.0:1 to 9.5:1 compression ratio and 2,200-2,800 RPM stall converters in automatic transmission applications.

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

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

Kit Type

K-Kit - Complete Kit

AMAZON ASIN

B005H89WXQ

Usage

Street/Performance

Assembly Lubricant Included

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

Intake Duration at .050 Inch Lift

235

Lifters Included

Yes

Intake Valve Lift

0.5

LOBE SEPARATION

107

Valve Springs Included

Yes

Advertised Intake Duration

287

Camshaft Series

Thumpr

Just ordered, so far so good. I love the free shipping, thanks

Great web page!

thanks

Good products, good price!

got faster than del date.

The order was on time

Website was easy to navigate and gave good details about the product with an appreciated option to do a vehicle fit varificayion before buying. Unfortunately the part I was buying increase in price $14 between the time I started looking and the time I bought. Oh well - snooze you loose.

Love the ease of making purchases with Affirm and delivery time was awesome to Hawaii thank you will I definitely recommend this site to friends and family.

Quick delivery, great price.

Parts were actually in-stock unlike every other retailer I tried. Quick shipping too.

Product was as described, great price and reasonable shipping cost. Shipping was also very quick.

RAPID SHIPPING RESPONSE BEST PRICING EVER!!!!!!!!!!!!!!

Thanks for offering instant $5.00 back on Order Number: 12559 for writing this review. <br>Great prices and fast shipping. I do not have the part yet but it was the best price on a LT1 MSD opti spark anywhere on the net. Great deal!!! And it was still cheaper than Jegs or Summit even with overnight shipping. Will use again if the deals are this good!

Great price, very helpful tech support,thanks will buy again<br><br> Chris

Very good company! Shipped out product very fast!!! I can say i will use them again

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