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COMP Cams Camshaft CS XR280 R-10

SKU: CCA12-771-8

Camshafts

CCA Camshafts...

COMP Cams Camshaft CS XR280 R-10

SKU: CCA12-771-8

Camshafts

CCA Camshafts...

A$1,238.65
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.
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Description

SBC - 1955-57 models have an oiling groove in the rear journal. The listed part numbered cams will not fit these models, so if you require a Camshaft with the oiling groove, please call us at 1-800-999-0853 or contact us, and we will assist you with placing an order. WARNING: Camshaft Optimized for use with a Melanized or Nitrided distributor Gear. Not compatible with cast or Steel Gears without similar surface treatments. Failure to utilize the proper distributor Gear will void all warranties and/or return policies.

Product Overview

Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.

Product Details

Advertised Exhaust Duration:286
Advertised Intake Duration:280
Amazon ASIN:B000V9ET16
Assembly Lubricant Included:No
Basic Operating RPM Range:500-6,500
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:Solid Roller
Cam and Lifter Kit Upgrade:CL12-771-8
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Austempered Ductile Iron
Camshaft Series:Xtreme Energy
Description:Xtreme Energy 242/248 Solid Roller Cam for Chevrolet Small Block
Engine Family:Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Exhaust Duration @ .050 in.:248
Exhaust Duration at .050 inch Lift:248
Exhaust Duration:286
Exhaust Valve Lift(in):0.576
Exhaust Valve Lift:0.576
Grind Number:XR280R
Intake Duration @ .050 in.:242
Intake Duration at .050 Inch Lift:242
Intake Duration:280
Intake Valve Lift(in):0.570
Intake Valve Lift:0.57
K-Kit Upgrade:K12-771-8
Lifter Type:Solid Roller
Lifters Included:No
Lobe Separation:110
Part Number:cca12-771-8
RPM Range:2000-9000
SK-Kit Upgrade:SK12-771-8
Title:Xtreme Energy 242/248 Solid Roller Cam for Chevrolet Small Block
Usage:Street/Performance
Valve Springs Required:Yes

Application Summary

Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.

Part Type

Engine Camshaft

Data: v4.2 - Upd: 2026-10-13 17:49:21

Specifications

Product Attributes - Brand
COMP Cams
Product Attributes - Manufacturer's Part Number
12-771-8
Product Attributes - Part Type
Camshafts
Product Attributes - Product Line
COMP Cams Xtreme Energy Camshafts
Product Attributes - UPC
036584058847
Product Attributes - Cam Style
Solid roller, Retro-fit
Product Attributes - Camshaft Use
Street/Strip
Product Attributes - Basic Operating RPM Range
2,500-6,500
Product Attributes - Intake Duration at 050 inch Lift
242
Product Attributes - Exhaust Duration at 050 inch Lift
248
Product Attributes - Duration at 050 inch Lift
242 int./248 exh.
Product Attributes - Advertised Intake Duration
280
Product Attributes - Advertised Exhaust Duration
286
Product Attributes - Advertised Duration
280 int./286 exh.
Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
0.570 in.
Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
0.576 in.
Product Attributes - Valve Lift with Factory Rocker Arm Ratio
0.570 int./0.576 exh.
Product Attributes - Lobe Separation (degrees)
110
Product Attributes - Intake Valve Lash
0.016 in.
Product Attributes - Exhaust Valve Lash
0.018 in.
Product Attributes - Remanufactured
No
Product Attributes - Computer-Controlled Compatible
No
Product Attributes - Grind Number
CS XR280 R-10
Product Attributes - Valve Springs Required
Yes
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Retro-fit: Designed for early non-roller blocks. Requires thrust button and wear plate.

Reference Information

Brand Name/s Comp Cams
StreetFX SKU cca12-771-8
SFX Item ID 4118838
Supplier Item Code 4118838
Manufacturer SKU 12-771-8
Manufacturer UPC 36584058847
Alternative References l46, l48, l65, lm1, lt-1, l82

Compatibility

Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.

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