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COMP Cams 11-568-4 Nitrous HP Hydraulic Flat Tappet Camshaft 240/253 Duration

(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

11-568-4
5 reviews
Sale Price

$309.95

Estimated ship date Tuesday, November 24

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Product Details

The COMP Cams 11-568-4 Nitrous HP hydraulic flat tappet camshaft is specifically engineered for nitrous oxide-equipped Chevrolet big block engines (396-454 cubic inches). This performance camshaft delivers aggressive power characteristics optimized for nitrous injection systems while maintaining streetability.

Key Specifications:

  • Advertised Duration: 280°/293° intake/exhaust
  • Duration at .050": 240°/253° intake/exhaust
  • Valve Lift: .533"/.560" intake/exhaust (with 1.7 rocker ratio)
  • Lobe Separation Angle: 107°
  • Hydraulic flat tappet design for reliable operation
  • Optimal RPM range: 2,500-6,500 RPM

Performance Features:

  • Designed specifically for nitrous oxide applications with proper timing events
  • Aggressive split duration pattern provides excellent cylinder scavenging
  • Tight lobe separation angle maximizes torque and cylinder pressure
  • Compatible with stock to mildly modified valve train components
  • Requires aftermarket torque converter and 3.73+ rear gear ratio for optimal performance

This camshaft is ideal for street/strip applications where nitrous oxide is used for power enhancement. The hydraulic flat tappet design provides maintenance-free operation while the aggressive profile delivers substantial power gains when the nitrous system is activated. Recommended for engines with good compression (9.5:1 or higher) and aftermarket cylinder heads.

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

Advertised Exhaust Duration

305

Advertised Intake Duration

284

Cam Type

Hydraulic Flat Tappet

Intake Valve Lift

0.575

Exhaust Valve Lift

0.595

Basic Operating RPM Range

2,800-6800

Exhaust Duration at .050 inch Lift

253

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL11-568-4

K-Kit Upgrade

K11-568-4

Camshaft Series

Nitrous HP

Grind Number

NX284H

SK-Kit Upgrade

SK11-568-4

Assembly Lubricant Included

Yes

Lifters Included

No

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.

Camshaft Gear Attachment

3-Bolt

LOBE SEPARATION

113

Intake Duration at .050 Inch Lift

240

AMAZON ASIN

B000P5G52C

Usage

Street/Strip

Engine Family

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

Easy

My experience with autoplicity was great. Great selection and service. Fast shipping. Will definitely use them again.

Cheapest price by far, not the speediest shipment unfortunately.

Great Prices

quick and polite service will deal with again

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