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 11-420-8 Magnum Hydraulic Roller Camshaft Big Block Chevy - 215/215 396-454

(Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1967-76, Malibu 1967, 1973-75, C1500 1990-93, Chevelle 1967-73, Blazer 1973-74 + 105 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

11-420-8
5 reviews
Sale Price

$577.95

Estimated ship date Tuesday, November 24

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 11-420-8 hydraulic roller camshaft is engineered specifically for Chevrolet big block engines from 396 to 454 cubic inches. This camshaft delivers a balanced combination of performance and reliability with its 215/215 duration profile, making it an excellent choice for street and mild performance applications.

Camshaft Specifications:

  • Advertised Duration: 263°/263° (intake/exhaust)
  • Duration at .050": 215°/215° (intake/exhaust)
  • Valve Lift with 1.7 Rocker: .465"/.465" (intake/exhaust)
  • Lobe Separation Angle: 112°
  • Hydraulic roller design for reduced friction and increased durability
  • Recommended RPM Range: 1,500-5,500

Performance Characteristics:

  • Smooth idle quality with excellent vacuum for power brakes
  • Broad torque curve ideal for street driving and towing
  • Works with stock valve springs and components
  • No computer modifications required for stock fuel injection systems
  • Compatible with stock torque converters and rear gear ratios

This camshaft is perfect for enthusiasts seeking a noticeable performance upgrade over stock while maintaining excellent street manners and driveability. The hydraulic roller design provides the performance benefits of a roller cam with the low-maintenance convenience of hydraulic lifters.

Note: Requires hydraulic roller lifters and compatible timing set (not included). Always verify valve-to-piston clearance when installing any aftermarket camshaft.

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 + 100 more models

Basic Operating RPM Range

1,800-5,000

Grind Number

270HR

Exhaust Valve Lift

0.566

Intake Valve Lift

0.566

Exhaust Duration at .050 inch Lift

215

Camshaft Material

Austempered Ductile Iron

Cam and Lifter Kit Upgrade

CL11-420-8

K-Kit Upgrade

K11-420-8

Camshaft Series

Magnum

SK-Kit Upgrade

SK11-420-8

Assembly Lubricant Included

No

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.

Advertised Intake Duration

270

Camshaft Gear Attachment

3-Bolt

Lifter Type

Hydraulic Roller

Advertised Exhaust Duration

270

Cam Type

Hydraulic Roller

AMAZON ASIN

B001O09ME0

Usage

Street/Strip

Intake Duration at .050 Inch Lift

215

Engine Family

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

Great and user friendly

Was easy to find the correct parts.

I paid for 2nd day shipping and 5 days later they were shipped out. So, I should receive my rotors in a full week from when I paid for 2 day shipping. I called customer service and they discounted the shipping rate to ground service. At least they were polite and helpful in the phone.

great experience, good price, item arrived within 4 days of purchase, would do business with again in future !

Easy order placement, fast shipment

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