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COMP Cams 11-611-5 Drag Race Solid Flat Tappet Camshaft Big Block Chevy - 260/270 396-454

(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

11-611-5
4 reviews
Sale Price

$325.95

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Product Details

The COMP Cams 11-611-5 is a high-performance solid flat tappet camshaft designed specifically for drag racing, pulling, and mud racing applications in Chevrolet Big Block engines (396-454 cubic inches). This aggressive camshaft delivers excellent top-end power and throttle response for competitive motorsports applications.

Camshaft Specifications:

  • Advertised Duration: 260° intake / 270° exhaust
  • Valve Lift: Designed for solid flat tappet lifter systems
  • Engine Application: Chevrolet Big Block 396, 402, 427, and 454 engines
  • Camshaft Type: Solid flat tappet design for maximum durability under extreme conditions
  • Performance Range: Optimized for high-RPM racing applications with focus on top-end power

Key Features:

  • Aggressive duration profile for maximum horsepower in competition environments
  • Solid lifter design eliminates hydraulic lifter pump-up at high RPM
  • Split duration pattern (260/270) provides optimized exhaust scavenging
  • Engineered for drag racing, tractor pulling, and mud racing applications
  • Precision ground on COMP Cams equipment for consistent lobe profiles
  • Requires periodic valve lash adjustment and solid lifters (not included)

This camshaft is intended for dedicated race engines and requires supporting modifications including valve springs, pushrods, lifters, and proper valvetrain components. Not recommended for street use due to rough idle and high-RPM power band. Professional installation and proper break-in procedures are essential for optimal performance and longevity.

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

310

Advertised Intake Duration

295

Basic Operating RPM Range

3,800-6,800

Usage

Strip

Lifter Type

Solid Flat Tappet

Exhaust Valve Lift

0.638

Intake Valve Lift

0.629

Intake Duration at .050 Inch Lift

260

Grind Number

295B-8

Camshaft Material

Cast Iron

Camshaft Series

Puller and Mud Race

Cam Type

Solid Flat Tappet

Assembly Lubricant Included

Yes

Lifters Included

No

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

LOBE SEPARATION

108

Exhaust Duration at .050 inch Lift

270

Engine Family

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

AMAZON ASIN

B000N5MW44

No hassle ordering and fast quality shipping at a reasonable price

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.

competitive prices and good selection. Will definitely look to this vendor when purchasing automotive parts in the future. I ordered a roof rack and it was very hard to find elsewhere and the few places I did find it, it was more expensive.. it was cheap and easy here. thanks :)

Autoplicity offered the best internet price, and utilized Paypal for guaranteed customer service. Shipping tracking through UPS is accurate and customer focused. I'm very pleased with the retail experience, and will use Autoplicity on future orders and best prices.

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