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COMP Cams 12-418-8 Xtreme Marine Hydraulic Roller Camshaft 224/230 Chevrolet Small Block

(GMC G2500 1979-95, Yukon 1992-95, K1500 1979-86, 1988-95, C1500 1979-86, 1988-95, K2500 1979-86, 1988-95, Jimmy 1970-91 + 238 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

12-418-8
4 reviews
Sale Price

$577.95

In Stock (6)

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Usually delivered within 2 days

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Product Details

The COMP Cams 12-418-8 Xtreme Marine hydraulic roller camshaft is specifically engineered for Chevrolet small block marine applications, delivering reliable performance in harsh saltwater and freshwater environments. This camshaft features a 224/230 duration profile optimized for smooth idle characteristics and strong mid-range torque, making it ideal for inboard and stern drive marine engines.

Key Features:

  • Hydraulic roller design eliminates the need for break-in procedures and reduces friction for improved durability
  • 224° intake / 230° exhaust advertised duration provides excellent torque curve for marine applications
  • Specially treated for corrosion resistance in marine environments
  • Direct replacement for Chevrolet small block V8 engines (262-400 cubic inches)
  • Compatible with stock or aftermarket roller lifters and valve train components
  • Designed to work with stock fuel systems and compression ratios

This camshaft is part of COMP Cams' Xtreme Marine series, which undergoes additional quality control and surface treatments to withstand the unique demands of marine engine operation. The hydraulic roller design provides quiet operation and eliminates valve train wear common in marine applications. Ideal for boat owners seeking improved throttle response and fuel efficiency without sacrificing reliability.

Products specifications

Fits

GMC G2500 1979-95, Yukon 1992-95, K1500 1979-86, 1988-95, C1500 1979-86, 1988-95, K2500 1979-86, 1988-95, Jimmy 1970-91, C3500 1979-86, 1988-95, K2500 Suburban 1979-86, 1992-95, K3500 1979-86, 1988-95, C15/C1500 Pickup 1967-74 + 234 more models

Grind Number

XM276HR

Exhaust Valve Lift

0.51

Intake Valve Lift

0.503

Camshaft Material

Austempered Ductile Iron

Cam and Lifter Kit Upgrade

CL12-418-8

K-Kit Upgrade

K12-418-8

SK-Kit Upgrade

SK12-418-8

Camshaft Series

Xtreme Marine

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

Lifter Type

Hydraulic Roller

Exhaust Duration at .050 inch Lift

230

Cam Type

Hydraulic Roller

Usage

Marine

Advertised Exhaust Duration

282

Basic Operating RPM Range

1,800-5,800

Intake Duration at .050 Inch Lift

224

Advertised Intake Duration

276

Engine Family

Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)

AMAZON ASIN

B000P5B770

Very satisfied! My intake shipped on Friday and I received it on Tuesday. Not only super fast shipping, but a great deal to boot!

very good so far. waiting to see how delivery goes. thanks

I ordered a hitch off of this site for Christmas, I have never heard of it nor did I know how they were, but they are great! Got my package in I'd say 4 days, very fast and it was exactly what I wanted! Only down fall was they charged me 3 times and I was short 150$ for a few days. I got my money back and I would definitely order again.

Very good customer service asked about a lot of different springs and parts for my Mazdaspeed 3.

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