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COMP Cams Cam & Lifter Kit CS 283T HR-

SKU: CCACL12-600-8

Camshaft Kits

CCA Cam & Lifter Kits...

COMP Cams Cam & Lifter Kit CS 283T HR-

SKU: CCACL12-600-8

Camshaft Kits

CCA Cam & Lifter Kits...

A$2,624.22
Available from MFR. In stock at 1 location (more than 10 available)

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Description

COMP Cams Cam & Lifter Kit CS 283T HR-

CL-KIT - Cam and Lifter Kit Includes: Camshaft, Lifters, Assembly Lube, Decals and Instructions.

Additional Information

High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle.

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 and Lifter Kit

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.

Additional Application Notes
• Retro-Fit Hyd. Roller; 1900-5600rpm; Adv. Dur. 283 Int./303 Exh.; Valve Lift .511 Int/.497 Exh.; Lobe Angle 107 deg.; Incl. Cam/Lifters; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
• From 1985-1998 Chevrolet introduced the factory roller Small Block into GM cars and trucks. Verify whether or not your vehicle came with a factory roller camshaft. If your vehicle was equipped with a roller camshaft, look to our camshafts and kits that start with "08-".

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-07 21:18:25

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Advertised Exhaust Duration:303
Advertised Intake Duration:283
Amazon ASIN:B001GENSZI
Assembly Lubricant Included:No
Basic Operating RPM Range:1,900-5,600
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.
Cam Type:Hydraulic Roller
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Austempered Ductile Iron
Camshaft Series:Thumpr
Description:Thumpr 227/241 Hydraulic Roller Cam and Lifter Kit for Chevrolet Small Block
Engine Family:Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Exhaust Duration @ .050 in.:241
Exhaust Duration at .050 inch Lift:241
Exhaust Duration:303
Exhaust Valve Lift(in):0.497
Exhaust Valve Lift:0.497
Gaskets Included:No
Intake Duration @ .050 in.:227
Intake Duration at .050 Inch Lift:227
Intake Duration:283
Intake Valve Lift(in):0.511
Intake Valve Lift:0.511
K-Kit Upgrade:K12-600-8
Kit Type:CL-Kit - Cam and Lifter Kit
Lifter Type:Hydraulic Roller
Lifters Included:Yes
Locks Included:No
Part Number:ccaCL12-600-8
RPM Range:1000-7000
Retainers Included:No
SK-Kit Upgrade:GK12-600-8
Timing Chain and Gears Included:No
Title:Thumpr 227/241 Hydraulic Roller Cam and Lifter Kit for Chevrolet Small Block
Usage:Street/Performance
Valve Springs Required:Yes
Valve Stem Seals Included:No

Product Downloads

# Document Type Download
1. Catalog

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-07 19:08:45

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU ccaCL12-600-8
SFX Item ID 4123071
Accounting SKU cca-CL12-600-8
Manufacturer SKU CL12-600-8
Manufacturer UPC 036584153399
Alternative References CCA-CL12-600-8, CL12-600-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 283/303, Lift .511/.498, Chevy, Small Block, Kit

Musclecar sound is back and nastier than ever with these Thumpr retrofit hydraulic roller cam and lifter kits from COMP Cams! These cams feature a thumping high performance idle and provide significant horsepower and torque increases. Specially engineered profiles are offered for each unique engine, providing the perfect combination of an early intake valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap to maximize your engine's nasty-idling characteristics without negatively impacting streetability. These kits include high-quality matched lifters for unbeatable performance, durability, and ease of installation.

Product Attributes
BrandCOMP Cams
Manufacturer's Part NumberCL12-600-8
Part TypeCamshaft Kits
Product LineCOMP Cams Thumpr Retrofit Hydraulic Roller Cam and Lifter Kits
UPC036584153399
Cam StyleHydraulic roller, Retro-fit
Basic Operating RPM Range1,900-5,600
Camshaft UseStreet/Strip
Intake Duration at 050 inch Lift227
Exhaust Duration at 050 inch Lift241
Duration at 050 inch Lift227 int./241 exh.
Advertised Intake Duration283
Advertised Exhaust Duration303
Advertised Duration283 int./303 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.511 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.498 in.
Valve Lift with Factory Rocker Arm Ratio0.511 int./0.498 exh.
Camshaft Gear Attachment3-bolt
Grind Number283THR7
Computer-Controlled CompatibleNo
Lifters IncludedYes
Lifter StyleHydraulic roller
Valve Springs IncludedNo
Retainers IncludedNo
Locks IncludedNo
Valve Stem Seals IncludedNo
Timing Chain and Gears IncludedNo
Assembly Lubricant IncludedNo
Pushrods IncludedNo
Rocker Arms IncludedNo
Gaskets IncludedNo
Valve Springs RequiredYes
QuantitySold as a kit.
NotesRetro-fit: Designed for early non-roller blocks. Requires thrust button and wear plate.

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