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COMP Cams 11-220-4 Magnum Solid Flat Tappet Camshaft Big Block Chevy - 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

11-220-4
8 reviews
Sale Price

$309.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The COMP Cams 11-220-4 Magnum camshaft is a solid flat tappet performance camshaft designed specifically for Chevrolet Big Block engines (396-454 cubic inches). This dual-pattern camshaft delivers 260 degrees of advertised duration on both intake and exhaust, providing a balanced powerband with strong mid-range torque and excellent top-end horsepower.

Key Specifications:

  • Advertised Duration: 260°/260° (Intake/Exhaust)
  • Lift: Approximately .480"/.480" (with 1.7 rocker ratio)
  • Lobe Separation Angle: 110°
  • Camshaft Type: Solid flat tappet
  • Application: Chevrolet Big Block 396, 402, 427, 454 engines

Performance Characteristics:

  • Idle: Lumpy performance idle with moderate vacuum
  • RPM Range: 1,800-6,000 RPM
  • Power Delivery: Strong mid-range with excellent top-end power
  • Recommended for street/strip applications and marine performance builds
  • Requires aftermarket valve springs and solid lifters (not included)

This camshaft is ideal for performance street engines, bracket racing applications, and high-performance marine engines where reliability and proven performance are essential. The solid flat tappet design provides durability and consistent valve timing without the maintenance concerns of roller lifters in marine environments. Must be used with compatible valve springs, solid lifters, and proper break-in procedures.

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 Intake Duration

306

Grind Number

306S

Lifter Type

Solid Flat Tappet

Exhaust Valve Lift

0.629

Intake Valve Lift

0.629

Exhaust Duration at .050 inch Lift

260

Intake Duration at .050 Inch Lift

260

Basic Operating RPM Range

3,000-7000

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL11-220-4

K-Kit Upgrade

K11-220-4

Camshaft Series

Magnum Marine

SK-Kit Upgrade

SK11-220-4

Cam Type

Solid Flat Tappet

Assembly Lubricant Included

Yes

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

AMAZON ASIN

B0014F6G4O

Advertised Exhaust Duration

306

Usage

Street/Strip

Engine Family

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

All seems correct and quick... good communication

Great pricing and customer service. Item shipped on time and with no complicaitons. Best pricing on the internet that I could find. Great seller.

Great customer service, ships fast. Will buy from again

Excellent prices + great customer service = people I want to do business with... period.

Awesome price! Shipping could be faster, but it was fast enough. Will deff buy again.

Good customer service.Very friendly persons in service dept as well. Will shop here again.

This is the first time I've ordered from this site, but things look good from what I can tell so far. They had the parts I was looking for (including a fairly specialized racing part) for a price slightly lower than other places I had looked, and my order shipped the next business day. At the time I wrote this, they were also offering $5 back on my order for writing a review. ;-)

very good low price, had a slight issue but customer service was amazing,. i would recommend AutoPlicity to anyone because of that, good prices, good customer service,. (meaning trust worthy) why not :). A+++ Service will buy from again!

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