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COMP Cams Camshaft Kit FS 283Th R7 Thumper

SKU: CCAK31-600-8

Camshaft Kits

CCA Camshaft Kits...

COMP Cams Camshaft Kit FS 283Th R7 Thumper

SKU: CCAK31-600-8

Camshaft Kits

CCA Camshaft Kits...

A$2,734.61
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

COMP Cams Camshaft Kit FS 283Th R7 Thumper

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.

Additional Information

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

Application Summary

Fits Ford 221, 255, 260, 289 and 302 Small Block

Part Type

Engine Camshaft Kit

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

Additional Application Notes
• Retro-Fit Hyd. Roller;1900-5600rpm;Adv.Dur. 283 In/303 Exh; V.Lift .531 In/.515 Exh;Lobe 107 deg.;Incl. Cam/V.Sprng/Ret./Locks/Seal/Timing Set;
• w/ M Engine VIN; Retro-Fit Hyd. Roller;1900-5600rpm;Adv.Dur. 283 In/303 Exh; V.Lift .531 In/.515 Exh;Lobe 107 deg.;Incl. Cam/V.Sprng/Ret./Locks/Seal/Timing Set;

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 21:16:39

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:B0046ZJ9EI
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 Material:Austempered Ductile Iron
Camshaft Series:Thumpr
Description:Thumpr 227/241 Hydraulic Roller Cam K-Kit for Ford 221-302
Engine Family:Ford 221, 260, 289, 302 c.i. 8 Cylinder (1963-1995)
Exhaust Duration @ .050 in.:241
Exhaust Duration at .050 inch Lift:241
Exhaust Duration:303
Exhaust Valve Lift(in):0.515
Exhaust Valve Lift:0.515
Gaskets Included:No
Intake Duration @ .050 in.:227
Intake Duration at .050 Inch Lift:227
Intake Duration:283
Intake Valve Lift(in):0.531
Intake Valve Lift:0.531
Kit Type:K-Kit - Complete Kit
Lifter Type:Hydraulic Roller
Lifters Included:Yes
Part Number:ccaK31-600-8
RPM Range:1000-7000
Title:Thumpr 227/241 Hydraulic Roller Cam K-Kit for Ford 221-302
Usage:Street/Hi-Performance
Valve Springs Included:Yes

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 19:10:40

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU ccaK31-600-8
SFX Item ID 4123916
Accounting SKU cca-K31-600-8
Manufacturer SKU K31-600-8
Manufacturer UPC 036584215028
Alternative References CCA-K31-600-8, K31-600-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 283/303, Lift .531/.515, Ford, 289, 302, 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 NumberK31-600-8
Part TypeCamshaft Kits
Product LineCOMP Cams Thumpr Retrofit Hydraulic Roller Cam and Lifter Kits
UPC036584215028
Cam StyleHydraulic roller, Retro-fit
Basic Operating RPM Range1,900-5,600
Camshaft UseStreet/Strip
Camshaft Manufacturers DescriptionThumpr, high performance street. Stock converter OK, but best with 2000+ converter and gears. Choppy, idle.
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 Ratio0.531 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.515 in.
Valve Lift with Factory Rocker Arm Ratio0.531 int./0.515 exh.
Grind Number283THR7
Computer-Controlled CompatibleNo
Lifters IncludedYes
Lifter StyleHydraulic roller
Valve Springs IncludedYes
Outside Diameter of Outer Spring (in.)1.430 in.
Retainers IncludedYes
Locks IncludedYes
Valve Stem Seals IncludedYes
Timing Chain and Gears IncludedYes
Timing Chain StyleDouble roller
Assembly Lubricant IncludedYes
Pushrods IncludedNo
Rocker Arms IncludedNo
Gaskets IncludedNo
Valve Springs RequiredNo
QuantitySold as a kit.

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