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 K96-601-5 Mutha' Thumpr 235/249 Hydraulic Flat Cam K-Kit for Buick V8

(Buick Regal 1973-74, LeSabre 1970-76, Century 1971, 1973-74, Skylark 1967-68, 1970-71, Riviera 1967-76, Electra 1967-76, Centurion 1971-73 + 8 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

K96-601-5
5 reviews
Sale Price

$807.95

Estimated ship date Saturday, November 21

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 Mutha' Thumpr K96-601-5 is a complete camshaft installation kit engineered specifically for Buick 400, 430, and 455 cubic inch V8 engines. This hydraulic flat tappet camshaft delivers an aggressive 235/249 duration split that produces the signature "thumper" idle sound while maintaining excellent street manners and reliable performance.

Complete K-Kit Includes Everything You Need:

  • Hydraulic flat tappet camshaft with 235/249 duration profile
  • Hydraulic lifters engineered to match cam specifications
  • Performance valve springs with proper seat pressure and coil bind clearance
  • Spring retainers and valve locks (keepers)
  • Valve stem seals for positive oil control
  • Timing chain set for precise cam timing
  • Assembly lube to protect components during initial break-in
  • Installation instructions and COMP Cams decals

The Mutha' Thumpr series is designed for enthusiasts who want that aggressive lope at idle with strong mid-range torque for street performance. This kit eliminates the guesswork by providing all matched components in one package, ensuring proper valvetrain dynamics and reliable operation. Ideal for muscle car restorations, street rods, and performance street builds where sound and reliable power delivery are priorities.

Products specifications

Fits

Buick Regal 1973-74, LeSabre 1970-76, Century 1971, 1973-74, Skylark 1967-68, 1970-71, Riviera 1967-76, Electra 1967-76, Centurion 1971-73, GS 455 1970-72, Wildcat 1967-70, Estate Wagon 1970-76, Gran Sport 1967, GS400 1968-69 + 3 more models

Advertised Exhaust Duration

297

Advertised Intake Duration

279

Basic Operating RPM Range

2,200-6,100

Cam Type

Hydraulic Flat Tappet

Intake Valve Lift

0.494

Exhaust Duration at .050 inch Lift

241

Engine Family

Buick 400, 430, 455 c.i. 8 Cylinder (1967-1976)

Camshaft Material

Cast Iron

Kit Type

K-Kit - Complete Kit

AMAZON ASIN

B005H89UV0

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

227

Lifters Included

Yes

LOBE SEPARATION

107

Valve Springs Included

Yes

Usage

Street/Strip

Exhaust Valve Lift

0.48

Camshaft Series

Thumpr

Quick Shipping and friendly Service

So far so good.

Autoplicity is Awesome!!!!! I ordered a Aeromotive Stealth 340hp fuel pump for my 89 Supra Turbo. Not only did they have the best price on the part I ordered, the shipping was the fastest I've seen in a long time from any company. I ordered it on Wednesday, had it shipped to a freinds house where my car is and the part was there Friday morning. I was like DAMN!!!! That was fast I wasn't expecting it till Saturday or even Monday. Luckly my friend was off work that day so he could sign for it. With service like that I will definitely order from them again, even if the part cost a little more, cause I know I will get it ASAP!!!! On top of getting the awesome price, shipping, and customer service, now they are offering another $5.00 off my order. The only thing that could have been better is if they offer Military Discount which I forgot to ask about. Well kids the moral of the story is, that if you don't order from Autoplicity you are just plain DUMB!!!!!!

Best price, reasonable shipping, and they even gave me a discount AFTER I placed the order.

Fast professional service and delivery. Thank You

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