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COMP Cams Camshaft Kit CB XM270H-12

SKU: CCAK11-236-4

Camshaft Kits

CCA Camshaft Kits...

COMP Cams Camshaft Kit CB XM270H-12

SKU: CCAK11-236-4

Camshaft Kits

CCA Camshaft Kits...

A$1,803.62
Limited Availability from MFR Limited stock available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical orders of this part. This item is not held in our own warehouse, and availability and release timing may vary depending on manufacturer stock movements and processing at the time of ordering.
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Description

K-KIT - Complete Kit Includes: Camshaft, Lifters, Valve Springs, Retainers, Valve Locks, Valve Stem Seals, Timing Chain Set, Assembly Lube (in flat tappet applications), Decals and Instructions.

Product Overview

COMP Cams offers complete component-matched valve train kits that deliver unbeatable performance, durability and ease of installation. All cam kits are fully tested and manufactured to the strictest standards. Each kit’s components were specifically chosen as the best performance match for that particular camshaft so that you can reap the benefits of a perfectly matched “Power Engineered System.” *K-Kit - Complete Kit Includes* * Camshaft * Lifters * Valve Springs * Retainers * Valve Locks * Valve Stem Seals * Assembly Lube * Decals * Instructions

Product Details

Advertised Exhaust Duration:286
Advertised Intake Duration:270
Amazon ASIN:B001GF1DPY
Assembly Lubricant Included:Yes
Basic Operating RPM Range:1,600-5,800
C.A.R.B. E.O. Number:N/A
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.
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. Exemption Reason:N/A
California Proposition 65:WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Cam Type:Hydraulic Flat Tappet
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Cast Iron
Camshaft Series:Xtreme Marine
Description:Xtreme Marine 226/236 Hydraulic Flat Cam K-Kit for Chevrolet Big Block 396-454
Engine Family:Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
Exhaust Duration @ .050 in.:236
Exhaust Duration at .050 inch Lift:236
Exhaust Duration:286
Exhaust Valve Lift(in):0.547
Exhaust Valve Lift:0.547
Gaskets Included:No
Intake Duration @ .050 in.:226
Intake Duration at .050 Inch Lift:226
Intake Duration:270
Intake Valve Lift(in):0.544
Intake Valve Lift:0.544
Kit Type:K-Kit - Complete Kit
Lifter Type:Hydraulic Flat Tappet
Lifters Included:Yes
Lobe Separation:112
Part Number:ccaK11-236-4
RPM Range:1000-7000
Title:Xtreme Marine 226/236 Hydraulic Flat Cam K-Kit for Chevrolet Big Block 396-454
Usage:Marine
Valve Springs Included:Yes

Application Summary

Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

Part Type

Engine Camshaft Kit

Data: v4.2 - Upd: 2026-10-13 17:41:08

Specifications

Product Attributes - Brand
COMP Cams
Product Attributes - Manufacturer's Part Number
K11-236-4
Product Attributes - Part Type
Camshaft Kits
Product Attributes - Product Line
COMP Cams Xtreme Marine Cam and Lifter Kits
Product Attributes - UPC
036584040569
Product Attributes - Cam Style
Hydraulic flat tappet
Product Attributes - Basic Operating RPM Range
1,600-5,800
Product Attributes - Camshaft Use
Marine
Product Attributes - Intake Duration at 050 inch Lift
226
Product Attributes - Exhaust Duration at 050 inch Lift
236
Product Attributes - Duration at 050 inch Lift
226 int./236 exh.
Product Attributes - Advertised Intake Duration
270
Product Attributes - Advertised Exhaust Duration
286
Product Attributes - Advertised Duration
270 int./286 exh.
Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
0.544 in.
Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
0.547 in.
Product Attributes - Valve Lift with Factory Rocker Arm Ratio
0.544 int./0.547 exh.
Product Attributes - Lobe Separation (degrees)
112
Product Attributes - Grind Number
CB XM 270H-12
Product Attributes - Computer-Controlled Compatible
No
Product Attributes - Lifters Included
Yes
Product Attributes - Lifter Style
Hydraulic flat tappet
Product Attributes - Valve Springs Included
Yes
Product Attributes - Outside Diameter of Outer Spring (in.)
1.525 in.
Product Attributes - Retainers Included
Yes
Product Attributes - Locks Included
Yes
Product Attributes - Valve Stem Seals Included
Yes
Product Attributes - Timing Chain and Gears Included
Yes
Product Attributes - Timing Chain Style
Double non-roller
Product Attributes - Assembly Lubricant Included
Yes
Product Attributes - Pushrods Included
No
Product Attributes - Rocker Arms Included
No
Product Attributes - Gaskets Included
No
Product Attributes - Valve Springs Required
No
Product Attributes - Quantity
Sold as a kit.

Reference Information

Brand Name/s Comp Cams
StreetFX SKU ccaK11-236-4
SFX Item ID 4123623
Supplier Item Code 4123623
Manufacturer SKU K11-236-4
Manufacturer UPC 36584040569
Alternative References c10, s10, XM270H-12

Compatibility

Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

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