Engines and Components› Camshafts and Valvetrain

COMP Cams

Marine 242/248 H-Roller K-Kit BBC GEN VI

$1,724.95

SKU: C007 K01-456-8

In Stock
In Stock
Ships by Jun 10
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The COMP Cams Xtreme Marine 242/248 Hydraulic Roller Cam is designed for Chevrolet Big Block GEN VI 454 and 502 c.i. 8 Cylinder engines from 1996-1999. It is suitable for jet boat applications with A or B impeller in bracket racing or performance use. This camshaft features a grind number XM296HR, with an operating RPM range of 2,800-6,200, intake duration of 242 DD, exhaust duration of 248 DD at .050", and valve lift of 0.566 IN for both intake and exhaust.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCOMP Cams
Part NumberC007 K01-456-8

Videos

Big Camshaft and Intake in my Mercruiser boat!

Big Camshaft and Intake in my Mercruiser boat!
454 Big Block MerCruiser with Comp Cams XM270H

454 Big Block MerCruiser with Comp Cams XM270H
Comp Cams Xtreme Marine Cam 08-418-8

Comp Cams Xtreme Marine Cam 08-418-8
The smallest camshaft that comp makes for a small block Chevy boat engine.. Still sounds good!

The smallest camshaft that comp makes for a small block Chevy boat engine.. Still sounds good!
Comp Cams Xtreme Marine 284 Hydraulic Roller Cam Kit BBC 498

Comp Cams Xtreme Marine 284 Hydraulic Roller Cam Kit BBC 498
Speed Secrets: Gen 6 454 Cam Swap

Speed Secrets: Gen 6 454 Cam Swap
Big block chevy 454 comp cams xs274

Big block chevy 454 comp cams xs274
BBC GEN VI Cam Install

BBC GEN VI Cam Install
James' Budget L29 Gen VI 454 running on the engine stand!

James' Budget L29 Gen VI 454 running on the engine stand!

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy