My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

COMP Cams 11-218-4 Magnum 236/236 Solid Flat Tappet Camshaft for Chevrolet 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

11-218-4
4 reviews
Sale Price

$309.95

4 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The COMP Cams Magnum 11-218-4 is a solid flat tappet camshaft designed specifically for Chevrolet Big Block 396-454 engines. This proven performance camshaft delivers excellent high RPM power gains over stock while maintaining valve train durability, making it an ideal choice for street/strip applications and performance rebuilds.

Camshaft Specifications:

  • Duration: 236°/236° advertised duration
  • Grind: Solid flat tappet design
  • Application: Chevrolet Big Block 396, 402, 427, 454 engines
  • Recommended compression ratio: 9.5:1 or higher
  • Ideal for bleeding off excess compression in high-compression builds

Performance Characteristics:

  • Excellent high RPM power delivery without excessive valve train stress
  • Works with mild ratio rocker arms and traditional performance valve springs
  • Best results achieved with aftermarket higher stall torque converter
  • Balanced performance gains without the aggressive wear of radical grinds

The Magnum series represents a time-tested approach to performance camshaft design, offering substantial power improvements while maintaining reliability. This camshaft is well-suited for street-driven performance engines where durability and drivability are as important as power output.

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

282

Grind Number

282S

Lifter Type

Solid Flat Tappet

Intake Valve Lift

0.561

Exhaust Valve Lift

0.561

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL11-218-4

K-Kit Upgrade

K11-218-4

Camshaft Series

Magnum

SK-Kit Upgrade

SK11-218-4

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.

Basic Operating RPM Range

2,000-6,000

Camshaft Gear Attachment

3-Bolt

Exhaust Duration at .050 inch Lift

236

Intake Duration at .050 Inch Lift

236

Advertised Exhaust Duration

282

Usage

Street/Strip

Engine Family

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

AMAZON ASIN

B000CEO75S

Great Price on products and Shipping

Fast shipping, Good communication, Highly recommended.!!!

quick delivery of the parts I need to fix my jeep

Love this site

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy