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COMP Cams Camshaft CRB3 291Th R7 Thumper

SKU: CCA23-601-9

Camshafts

CCA Camshafts...

COMP Cams Camshaft CRB3 291Th R7 Thumper

SKU: CCA23-601-9

Camshafts

CCA Camshafts...

A$1,302.23
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

MT 235/249 HRlrChBRB

Mutha' Thumpr 235/249 Hydraulic Roller Cam

Additional Information

High performance street/strip, needs 9:1 compression 2500+ stall, intake, gears and headers, rough idle.

Application Summary

3-Bolt Camshaft Design - Fits Chrysler B/RB 383, 400, 413, 426 Wedge and 440

Part Type

Engine Camshaft

Product Overview

*Thumpr Camshafts*
• Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods
• Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note
• Best with aftermarket converters and more rear gear

Additional Application Notes
• Retro-Fit Hyd. Roller; 2200-5900rpm.; Adv. Dur. 291 In./311 Exh.; V. Lift .522 In./.508 Exh.; Lobe Angle 107 deg.;
• w/ U Engine VIN; Retro-Fit Hyd. Roller; 2200-5900rpm.; Adv. Dur. 291 In./311 Exh.; V. Lift .522 In./.508 Exh.; Lobe Angle 107 deg.;

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: 2026-11-10 00:36:10

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:B005H89TLQ
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 Gear Attachment:3-Bolt
Camshaft Material:Billet Steel
Camshaft Series:Thumpr
Description:Mutha' Thumpr 235/249 Hydraulic Roller Cam for Chrysler 383-440
Engine Family:Chrysler 383-440 c.i. 8 Cylinder (1959-1980)
Exhaust Duration @ .050 in.:249
Exhaust Duration at .050 inch Lift:249
Exhaust Duration:311
Exhaust Valve Lift(in):0.508
Exhaust Valve Lift:0.508
Grind Number:291THR7
Intake Duration @ .050 in.:235
Intake Duration at .050 Inch Lift:235
Intake Duration:291
Intake Valve Lift(in):0.522
Intake Valve Lift:0.522
Lifter Type:Hydraulic Roller
Lifters Included:No
Part Number:cca23-601-9
RPM Range:2200-7000
Title:Mutha' Thumpr 235/249 Hydraulic Roller Cam for Chrysler 383-440
Usage:Street/Strip
Valve Springs Required: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 19:02:43

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU cca23-601-9
SFX Item ID 4119472
Accounting SKU cca-23-601-9
Manufacturer SKU 23-601-9
Manufacturer UPC 036584211983
Alternative References 23-601-9, CCA-23-601-9

Camshaft, Hydraulic Roller Tappet, Advertised Duration 291/311, Lift .522/.508, Mopar, Big Block, Each

COMP Cams Mutha Thumpr hydraulic roller camshafts are manufactured to the strictest tolerances, rigorously tested and are checked for quality. The Thumpr lobe profiles are designed to optimize the character and sound, while providing excellent stability and a very wide power range—specific profiles are developed uniquely for the intake and exhaust. Have you ever been to the races and heard how nasty the cams sound? The Thumpr series of cams give you everyday drivability but have that nasty race engine growl! COMP Cams competitive drive, superior engineering, and cutting-edge technology is what keeps them at the fore front from any other camshaft manufacturer. So ... pick the cam for your application, then add a set of hydraulic lifters—and you will be the talk of the town!

Product Attributes
BrandCOMP Cams
Manufacturer's Part Number23-601-9
Part TypeCamshafts
Product LineCOMP Cams Mutha Thumpr Hydraulic Roller Camshafts
UPC036584211983
Cam StyleHydraulic roller, Retro-fit
Camshaft UseStreet/Strip
Basic Operating RPM Range2,200-5,900
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 Ratio0.522 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.508 in.
Valve Lift with Factory Rocker Arm Ratio0.522 int./0.508 exh.
Camshaft Gear Attachment3-bolt
RemanufacturedNo
Computer-Controlled CompatibleNo
Grind Number291THR7
Valve Springs RequiredYes
QuantitySold individually.

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