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COMP Cams GK11-600-8 Thumpr Hydraulic Roller Camshaft Kit for Chevrolet Big Block 396-454

(Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74 + 107 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

GK11-600-8
10 reviews
Sale Price

$1,560.95

Estimated ship date Tuesday, November 24

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Fitment guaranteed

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Product Details

The COMP Cams GK11-600-8 Thumpr Hydraulic Roller Camshaft Kit delivers aggressive performance and that distinctive loping idle sound for Chevrolet Big Block 396-454 engines. This complete camshaft kit features a 227/241 duration profile specifically engineered to produce excellent throttle response, strong mid-range torque, and impressive top-end power.

Key Features:

  • Hydraulic roller camshaft design for reduced friction and increased durability
  • 227/241 duration profile optimized for street/strip performance
  • Includes camshaft, lifters, springs, retainers, and all necessary installation components
  • Direct fit for Chevrolet Big Block 396-454 cubic inch engines
  • Signature Thumpr aggressive idle with smooth operation at higher RPMs
  • Engineered valve timing for improved power across the entire RPM range

This GK-Kit (Gold Kit) provides everything needed for a complete camshaft upgrade in one package, ensuring all components are properly matched for optimal performance and reliability. Ideal for hot street, muscle car, and weekend race applications where a noticeable power increase and aggressive sound are desired.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74, C10 Pickup 1968-74, Caprice 1966-76, C10 1975-81, El Camino 1966-75, Monte Carlo 1970-75 + 102 more models

Advertised Exhaust Duration

303

Basic Operating RPM Range

1,900-5,500

Exhaust Valve Lift

0.53

Exhaust Duration at .050 inch Lift

241

Kit Type

GK-Kit - Cam and Gear Kit

AMAZON ASIN

B002EE19FA

Usage

Street/Performance

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

Locks Included

No

Lifter Type

Hydraulic Roller

Intake Duration at .050 Inch Lift

227

Cam Type

Hydraulic Roller

Lifters Included

Yes

Retainers Included

No

Timing Chain and Gears Included

Yes

Intake Valve Lift

0.547

Advertised Intake Duration

283

Valve Stem Seals Included

No

Pushrods Included

No

Camshaft Series

Thumpr

Engine Family

Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)

Absolute best price on the web, very fast. Definitely ordering Autoplicity in the near future....

Great pricing and customer service. Item shipped on time and with no complicaitons. Best pricing on the internet that I could find. Great seller.

Great customer service, ships fast. Will buy from again

Bought Motive Brake Bleeding Kit (international) . Best Pricing all around.<br>Ordered on Tuesday , received via UPS Ground (cheap shipping) on Thursday Noon.<br>Excellent Packing.<br>Super Fast Shipping.<br>Very Statisfied with my on-line order.<br>Highly Recommended.

Excellent prices + great customer service = people I want to do business with... period.

Awesome price! Shipping could be faster, but it was fast enough. Will deff buy again.

Good price, hope shipping is quick and part is right fit.

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

This is the first time I've ordered from this site, but things look good from what I can tell so far. They had the parts I was looking for (including a fairly specialized racing part) for a price slightly lower than other places I had looked, and my order shipped the next business day. At the time I wrote this, they were also offering $5 back on my order for writing a review. ;-)

very good low price, had a slight issue but customer service was amazing,. i would recommend AutoPlicity to anyone because of that, good prices, good customer service,. (meaning trust worthy) why not :). A+++ Service will buy from again!

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