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COMP Cams 11-408-8 Xtreme Energy Hydraulic Roller Camshaft Big Block Chevy - 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

11-408-8
4 reviews
Sale Price

$577.95

In Stock (5)

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Usually delivered within 2 days

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Product Details

The COMP Cams Xtreme Energy 11-408-8 is a high-performance hydraulic roller camshaft engineered specifically for Chevrolet big block engines (396-454 cubic inches). This camshaft delivers excellent mid-range to top-end power, making it ideal for street/strip applications and performance street vehicles seeking aggressive throttle response without sacrificing streetability.

Camshaft Specifications:

  • Advertised Duration: 268°/274° (Intake/Exhaust)
  • Duration at .050": 206°/212° (Intake/Exhaust)
  • Valve Lift: .462"/.470" (Intake/Exhaust) with 1.7:1 rocker ratio
  • Lobe Separation Angle: 110°
  • Hydraulic roller design for reduced friction and improved durability
  • Recommended RPM Range: 1,500-5,500 RPM
  • Requires aftermarket valve springs and hydraulic roller lifters

Key Features:

  • Xtreme Energy lobe profile maximizes cylinder pressure for improved power output
  • Hydraulic roller technology eliminates break-in procedures required by flat tappet cams
  • Broad powerband suitable for daily driven performance vehicles
  • Compatible with stock torque converters and rear gear ratios
  • Delivers noticeable performance gain over stock camshafts

This camshaft is designed for engines with good aftermarket cylinder heads, headers, and a performance intake manifold. The hydraulic roller design provides the performance benefits of a roller cam while maintaining the simplicity and quiet operation of hydraulic lifters. Professional installation is recommended along with proper valvetrain component matching.

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

Grind Number

XR258HR

Exhaust Valve Lift

0.51

Intake Valve Lift

0.51

Intake Duration at .050 Inch Lift

206

Camshaft Material

Austempered Ductile Iron

Cam and Lifter Kit Upgrade

CL11-408-8

K-Kit Upgrade

K11-408-8

SK-Kit Upgrade

SK11-408-8

Usage

Street/Performance

Assembly Lubricant Included

No

Lifters Included

No

LOBE SEPARATION

110

Valve Springs Required

Yes

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.

Camshaft Gear Attachment

3-Bolt

Lifter Type

Hydraulic Roller

Advertised Exhaust Duration

264

Cam Type

Hydraulic Roller

Basic Operating RPM Range

1,000-5,000

Exhaust Duration at .050 inch Lift

212

Advertised Intake Duration

258

Engine Family

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

AMAZON ASIN

B000P5D7OQ

Camshaft Series

Xtreme Energy

a1 - but I don't see the passenger side roof ledge molding. 51-13-1-977-681

Called the support line and they were every helpful to clarify the shipping process of my order.

great experience, good price, item arrived within 4 days of purchase, would do business with again in future !

By far the best price I could find around. My order shipped within 2 days. I'll definitely use Autoplicity again.

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