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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
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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:303
Advertised Intake Duration:283
Amazon ASIN:B0046ZJ9EI
Assembly Lubricant Included:No
Basic Operating RPM Range:1,900-5,600
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 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
Lobe Separation:107
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

Application Summary

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

Part Type

Engine Camshaft Kit

Data: v4.2 - Upd: 2026-10-13 17:41:00

Specifications

Product Attributes - Brand
COMP Cams
Product Attributes - Manufacturer's Part Number
K31-600-8
Product Attributes - Part Type
Camshaft Kits
Product Attributes - Product Line
COMP Cams Thumpr Retrofit Hydraulic Roller Cam and Lifter Kits
Product Attributes - UPC
036584215028
Product Attributes - Cam Style
Hydraulic roller, Retro-fit
Product Attributes - Basic Operating RPM Range
1,900-5,600
Product Attributes - Camshaft Use
Street/Strip
Product Attributes - Camshaft Manufacturers Description
Thumpr, high performance street. Stock converter OK, but best with 2000+ converter and gears. Choppy, idle.
Product Attributes - Intake Duration at 050 inch Lift
227
Product Attributes - Exhaust Duration at 050 inch Lift
241
Product Attributes - Duration at 050 inch Lift
227 int./241 exh.
Product Attributes - Advertised Intake Duration
283
Product Attributes - Advertised Exhaust Duration
303
Product Attributes - Advertised Duration
283 int./303 exh.
Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
0.531 in.
Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
0.515 in.
Product Attributes - Valve Lift with Factory Rocker Arm Ratio
0.531 int./0.515 exh.
Product Attributes - Lobe Separation (degrees)
107
Product Attributes - Grind Number
283THR7
Product Attributes - Computer-Controlled Compatible
No
Product Attributes - Lifters Included
Yes
Product Attributes - Lifter Style
Hydraulic roller
Product Attributes - Valve Springs Included
Yes
Product Attributes - Outside Diameter of Outer Spring (in.)
1.430 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 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 ccaK31-600-8
SFX Item ID 4123916
Supplier Item Code 4123916
Manufacturer SKU K31-600-8
Manufacturer UPC 36584215028
Alternative References gt-350;, f-150;, 283Th

Compatibility

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

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