COMP Cams Camshaft CRB3 291Th R7 Thumper
COMP Cams Camshaft CRB3 291Th R7 Thumper
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.
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
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.
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 | |
|---|---|
| Brand | COMP Cams |
| Manufacturer's Part Number | 23-601-9 |
| Part Type | Camshafts |
| Product Line | COMP Cams Mutha Thumpr Hydraulic Roller Camshafts |
| UPC | 036584211983 |
| Cam Style | Hydraulic roller, Retro-fit |
| Camshaft Use | Street/Strip |
| Basic Operating RPM Range | 2,200-5,900 |
| Intake Duration at 050 inch Lift | 235 |
| Exhaust Duration at 050 inch Lift | 249 |
| Duration at 050 inch Lift | 235 int./249 exh. |
| Advertised Intake Duration | 291 |
| Advertised Exhaust Duration | 311 |
| Advertised Duration | 291 int./311 exh. |
| Intake Valve Lift with Factory Rocker Arm Ratio | 0.522 in. |
| Exhaust Valve Lift with Factory Rocker Arm Ratio | 0.508 in. |
| Valve Lift with Factory Rocker Arm Ratio | 0.522 int./0.508 exh. |
| Camshaft Gear Attachment | 3-bolt |
| Remanufactured | No |
| Computer-Controlled Compatible | No |
| Grind Number | 291THR7 |
| Valve Springs Required | Yes |
| Quantity | Sold individually. |
Compatibility
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