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COMP Cams K11-433-8 Xtreme Energy Hydraulic Roller Cam K-Kit for Chevy Big Block 396-454

(Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1967-76, Malibu 1967, 1973-75, C1500 1990-93, Chevelle 1967-73, Blazer 1973-74 + 104 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

K11-433-8
8 reviews
Sale Price

$1,623.95

Estimated ship date Thursday, November 19

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Product Details

The COMP Cams K11-433-8 Xtreme Energy hydraulic roller camshaft kit is a complete performance upgrade designed specifically for Chevrolet Big Block engines (396-454 cubic inches). This comprehensive K-Kit delivers aggressive performance with a 236/242 duration split, making it ideal for street/strip applications seeking increased mid-range to top-end power.

Complete K-Kit Includes:

  • Xtreme Energy hydraulic roller camshaft with 236/242 advertised duration
  • Premium hydraulic roller lifters engineered for high-performance durability
  • High-performance valve springs designed to match cam specifications
  • Precision-machined steel retainers for reliable valve train operation
  • Hardened valve locks for secure retainer attachment
  • Valve stem seals to prevent oil consumption
  • Heavy-duty timing chain set for accurate cam timing
  • Assembly lube for proper break-in procedures
  • Installation instructions and COMP Cams decals

Performance Characteristics:

The Xtreme Energy profile provides a noticeable increase in horsepower and torque throughout the RPM range, with particular emphasis on mid-range and top-end performance. The hydraulic roller design offers the performance benefits of a roller cam while maintaining the low-maintenance characteristics of hydraulic lifters—no valve lash adjustments required. This camshaft delivers a moderately aggressive idle with strong acceleration and excellent street manners.

Application Notes:

This kit is designed for Big Block Chevrolet engines including 396, 402, 427, and 454 cubic inch variants. The complete kit format ensures all valve train components are properly matched and compatible, eliminating guesswork and ensuring optimal performance. Recommended for engines with aftermarket cylinder heads, intake manifolds, and exhaust systems seeking maximum street performance with occasional strip use.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1967-76, Malibu 1967, 1973-75, C1500 1990-93, Chevelle 1967-73, Blazer 1973-74, C10 Pickup 1968-74, Caprice 1967-76, C10 1975-80, El Camino 1967-75, Monte Carlo 1970-75 + 99 more models

Basic Operating RPM Range

2,500-6,000

Intake Valve Lift

0.521

Camshaft Material

Austempered Ductile Iron

Kit Type

K-Kit - Complete Kit

AMAZON ASIN

B001GF0ZHG

Usage

Street/Performance

Assembly Lubricant Included

No

LOBE SEPARATION

110

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

Camshaft Gear Attachment

3-Bolt

Exhaust Valve Lift

0.54

Lifter Type

Hydraulic Roller

Exhaust Duration at .050 inch Lift

242

Intake Duration at .050 Inch Lift

236

Cam Type

Hydraulic Roller

Lifters Included

Yes

Advertised Exhaust Duration

294

Valve Springs Included

Yes

Advertised Intake Duration

288

Engine Family

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

Camshaft Series

Xtreme Energy

First of all, I can not believe how fast I recieved my order, 2 DAYS! Best of all, the instructions made it easy for a non mechanic like me to install.

They were Very quick and i was very happy with the service i got!! 9-10*

Best price I could find on the web even after paying for shipping! Shipped in a couple of days and great service!

fast shipping

Ordered a CAI kit and Autoplicity had the lowest price. They're website didn't correctly match my vehicle to the product and it took a few days to ship. They're support was friendly and quick when I emailed them about the delay.

Great customer service, item shipped quickly. Very satisfied.

Great site. Provided needed technical specs. Shipped promptly. Although I had to ask for the tacking number, it was not emailed, one was provided promptly upon request.

I couldn't find these ARP studs anywhere else for this price! $20 less than ANYWHERE! Definitely coming back to shop at Autoplicity.

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