Street. Track. Everything between.
07 3276 7829
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

COMP Cams Camshaft Kit FS 291Th R7 Thumper

SKU: CCAK31-601-8

Camshaft Kits

CCA Camshaft Kits...

COMP Cams Camshaft Kit FS 291Th R7 Thumper

SKU: CCAK31-601-8

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.

Added to cart

We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

COMP Cams Camshaft Kit FS 291Th 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/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough 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;2200-5900rpm;Adv.Dur. 291 In/311 Exh; V.Lift .54 In/.526 Exh;Lobe 107 deg.;Incl. Cam/V.Sprng/Ret./Locks/Seal/Timing Set;
• w/ F Engine VIN; Retro-Fit Hyd. Roller;2200-5900rpm;Adv.Dur. 291 In/311 Exh; V.Lift .54 In/.526 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:311
Advertised Intake Duration:291
Amazon ASIN:B005H89WXG
Assembly Lubricant Included:No
Basic Operating RPM Range:2,200-5,900
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:Mutha' Thumpr 235/249 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.:249
Exhaust Duration at .050 inch Lift:249
Exhaust Duration:311
Exhaust Valve Lift(in):0.526
Exhaust Valve Lift:0.526
Gaskets Included:No
Intake Duration @ .050 in.:235
Intake Duration at .050 Inch Lift:235
Intake Duration:291
Intake Valve Lift(in):0.540
Intake Valve Lift:0.54
Kit Type:K-Kit - Complete Kit
Lifter Type:Hydraulic Roller
Lifters Included:Yes
Part Number:ccaK31-601-8
RPM Range:2000-9000
Title:Mutha' Thumpr 235/249 Hydraulic Roller Cam K-Kit for Ford 221-302
Usage:Street/Strip
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 19:10:41

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU ccaK31-601-8
SFX Item ID 4123918
Accounting SKU cca-K31-601-8
Manufacturer SKU K31-601-8
Manufacturer UPC 036584215042
Alternative References CCA-K31-601-8, K31-601-8

Cam/Lifter, Valvetrain, Hydraulic Roller Tappet, Advertised Duration 291/311, Lift .540/.526, Ford, 221-302

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 NumberK31-601-8
Part TypeCamshaft Kits
Product LineCOMP Cams Thumpr Retrofit Hydraulic Roller Cam and Lifter Kits
UPC036584215042
Cam StyleHydraulic roller, Retro-fit
Basic Operating RPM Range2,500-6,200
Camshaft UseStreet/Strip
Camshaft Manufacturers DescriptionHigh performance street/strip, needs 9:1 compression, 2500+stall, intake, gears and headers, rough idle.
Intake Duration at 050 inch Lift235
Exhaust Duration at 050 inch Lift249
Duration at 050 inch Lift235 int./249 exh.
Advertised Intake Duration291
Advertised Exhaust Duration311
Advertised Duration291 int./311 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.540 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.526 in.
Valve Lift with Factory Rocker Arm Ratio0.540 int./0.526 exh.
Grind Number291THR7
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 RequiredYes
QuantitySold as a kit.

Compatibility

Loading compatibility information...

Keep shopping

More from Comp Cams