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COMP Cams 11-203-3 High Energy Hydraulic Flat Tappet Camshaft for Chevy Big Block 396-454

(Chevrolet Camaro 1967-72, Corvette 1966-74, Impala 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74 + 106 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

11-203-3
7 reviews
Sale Price

$297.95

In Stock (10+)

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Product Details

The COMP Cams High Energy 11-203-3 hydraulic flat tappet camshaft is engineered specifically for Chevrolet big block 396-454 cubic inch V8 engines. This camshaft delivers a proven performance profile with 212 degrees of advertised duration on both intake and exhaust, providing an excellent balance of increased power and torque while maintaining good street manners and reliability.

Key Specifications:

  • Advertised Duration: 212°/212° (Intake/Exhaust)
  • Duration @ .050": 184°/194° (Intake/Exhaust)
  • Valve Lift: .420"/.442" (Intake/Exhaust) with 1.7:1 rocker ratio
  • Lobe Separation Angle: 112°
  • Camshaft Type: Hydraulic flat tappet
  • Compatible with stock torque converters and rear gears

Performance Benefits:

  • Ideal RPM range: 1,500-5,000 RPM
  • Smooth idle quality with mild lope
  • Excellent low-end and mid-range torque improvement
  • Works well with stock or mildly modified cylinder heads
  • No computer modifications required for most applications

This High Energy series camshaft is perfect for daily drivers, street machines, and towing applications where improved performance is desired without sacrificing driveability or fuel economy. The conservative lift and duration specs ensure compatibility with stock valve springs and engine components, making it an economical upgrade that delivers noticeable power gains throughout the RPM range.

Note: Camshaft installation requires new lifters, timing set, and assembly lube. COMP Cams recommends using their break-in oil additive for proper cam and lifter break-in procedure.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1966-74, Impala 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74, C10 Pickup 1968-80, Caprice 1966-76, C10 1975-81, El Camino 1966-75, Monte Carlo 1970-75 + 101 more models

Advertised Exhaust Duration

260

Grind Number

260H

Cam Type

Hydraulic Flat Tappet

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL11-203-3

Camshaft Series

High Energy

K-Kit Upgrade

K11-203-3

SK-Kit Upgrade

SK11-203-3

Usage

Street/Performance

Assembly Lubricant Included

Yes

Lifters Included

No

LOBE SEPARATION

110

Valve Springs Required

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.

Advertised Intake Duration

260

Camshaft Gear Attachment

3-Bolt

AMAZON ASIN

B000V9GBX0

Intake Valve Lift

0.475

Basic Operating RPM Range

1,200-5,200

Exhaust Duration at .050 inch Lift

212

Intake Duration at .050 Inch Lift

212

Exhaust Valve Lift

0.475

Engine Family

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

Great price

excellent service, i had to wait a few days for the order to be processesed, but only because i ordered on Friday afternoon, but love the site!

Autoplicity was quick and easy to order from. I found just what I was looking for in absolutely no time at all, plus it was shipped extremely quickly. I would definitely order from this site/company again.<br><br>Thanks!

Fast and easy

excellent ship time and exceptional pricing deffinatly will buy from here again

Fast shipping, product was excellent .

Smooth transaction, very pleased

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