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COMP Cams 11-721-9 Drag Race Solid Roller Camshaft Chevrolet Big Block - 284/292 396-454

(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

11-721-9
9 reviews
Sale Price

$558.95

In Stock (9)

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Usually delivered within 2 days

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Product Details

The COMP Cams 11-721-9 is a high-performance solid roller camshaft engineered specifically for drag racing applications in Chevrolet Big Block engines (396-454 cubic inches). This aggressive cam profile delivers maximum power output for competitive racing scenarios where every horsepower counts.

Camshaft Specifications:

  • Advertised Duration: 284° intake / 292° exhaust
  • Lift: 0.680" intake / 0.680" exhaust (with 1.7 ratio rockers)
  • Duration @ .050": 244° intake / 252° exhaust
  • Lobe Separation Angle: 110°
  • Valve Timing: Optimized for maximum cylinder filling at high RPM
  • Solid roller design for precise valve control and durability under extreme conditions

Key Features:

  • Designed for dedicated drag race engines with supporting modifications
  • Requires solid roller lifters, high-performance valve springs, and upgraded valvetrain components
  • Optimal power band: 3,500-7,500 RPM range
  • Compatible with rectangular port and oval port cylinder heads
  • Manufactured from premium core materials with precision CNC grinding
  • Ideal for naturally aspirated or forced induction applications

This camshaft requires professional installation and proper valvetrain setup including checking piston-to-valve clearance. Not recommended for street-driven vehicles due to rough idle characteristics and limited low-RPM performance. Best suited for race-only engines with 10:1 or higher compression ratios, aftermarket heads, and competition-grade intake and exhaust systems.

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

332

Advertised Intake Duration

324

Grind Number

324AR-12

Usage

Strip

Exhaust Valve Lift

0.748

Intake Valve Lift

0.775

Intake Duration at .050 Inch Lift

284

Exhaust Duration at .050 inch Lift

292

Basic Operating RPM Range

5,200-7500

Camshaft Series

Drag Race

Assembly Lubricant Included

No

Lifters Included

No

LOBE SEPARATION

112

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

Cam Type

Solid Roller

Camshaft Material

Billet Steel

Lifter Type

Solid Roller

Engine Family

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

AMAZON ASIN

B000P5B5Y0

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