My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

COMP Cams K31-602-8 Big Mutha' Thumpr Hydraulic Roller Camshaft K-Kit for Ford - 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 + 44 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

K31-602-8
8 reviews
Sale Price

$1,168.90

Estimated ship date Thursday, November 19

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The COMP Cams K31-602-8 Big Mutha' Thumpr is a complete hydraulic roller camshaft K-Kit engineered specifically for Ford 221-302 cubic inch small block engines. This performance camshaft kit delivers an aggressive idle with excellent mid-range torque and power characteristics, making it ideal for street/strip applications where a distinctive lope and strong performance are desired.

Camshaft Specifications:

  • Duration: 243°/257° advertised duration
  • Hydraulic roller design for reduced friction and increased durability
  • Optimized lobe profiles for aggressive sound and performance
  • Designed for Ford 221-302 small block engines

Complete K-Kit Includes:

  • Hydraulic roller camshaft
  • Hydraulic roller lifters
  • Valve springs with proper seat pressure and coil bind clearance
  • Spring retainers
  • Valve locks (keepers)
  • Valve stem seals
  • Timing chain set
  • Assembly lube
  • COMP Cams decals
  • Detailed installation instructions

This comprehensive kit provides everything needed for a professional camshaft installation, eliminating the guesswork of component matching. The Big Mutha' Thumpr series is known for delivering maximum idle attitude while maintaining excellent driveability and power delivery. Designed for engines with aftermarket cylinder heads, intake manifolds, and exhaust systems to maximize performance gains.

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 1963-70, Galaxie 1963-67, Gran Torino 1972-74, LTD 1965-86 + 39 more models

Advertised Exhaust Duration

319

Advertised Intake Duration

299

Basic Operating RPM Range

2,500-6,200

Engine Family

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

Intake Valve Lift

0.552

Exhaust Valve Lift

0.537

Intake Duration at .050 Inch Lift

243

Exhaust Duration at .050 inch Lift

257

Camshaft Material

Austempered Ductile Iron

Kit Type

K-Kit - Complete Kit

AMAZON ASIN

B005H89WYA

Assembly Lubricant Included

No

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

Lifter Type

Hydraulic Roller

Cam Type

Hydraulic Roller

Lifters Included

Yes

LOBE SEPARATION

107

Valve Springs Included

Yes

Usage

Street/Strip

Camshaft Series

Thumpr

Very good give you 5 stars

ordered 4 cans to prime/paint/clear coat some rims. paint came in 2-3 days (incredibly fast). They forgot a can, i emailed and got a reply within 20 minutes, and the can was on my doorstep the next day. im very impressed

Why shop on Ebay, when there is Autoplicity. Cheaper prices than Ebay, Faster shipping and good return policies.

Easy ordering. Bets price by far. Fast shipping.

Fast and easy, love the feature that allowed me to pay with Amazon. Thanks!

Good customer service.Very friendly persons in service dept as well. Will shop here again.

First time I've ordered from Autoplicity. They had the cheapest price, I found online. Shipping was quick also. <br>Thanks!!!

no problems at all. found what i was looking for at the lowest price i could find

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy