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#2825460111
COMP Cams 54-601-11 Thumpr Hyd. Roller Camshaft, LS
$323.96
/each
Factory Shipped
$404.95
Save $80.99
Quantity
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Product Summary
Hydraulic Roller Tappet Camshaft Type
Rebates Available
See rebate detailsKey Specs
| Camshaft Type | Hydraulic Roller Tappet |
| RPM Range | 2300-6600 |
| Intake Duration (.050" Lift) | 227 |
| Exhaust Duration (.050" Lift) | 241 |
| Lobe Separation | 109 ° |
Need To Know
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Return PolicyCOMP Cams 54-601-11 Details
COMP Cams 54-601-11 Details
COMP Cams Mutha' Thumpr 283THR-9 Camshaft for LS Gen III/IV, Three-Bolt.
Thumpr. Mutha' Thumpr - High performance street/ strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle. All COMP Cams Camshafts are manufactured to the strictest tolerances. Rigorously tested and checked for quality.
- Three unique cam designs for each application that deliver excellent horsepower gains & broad torque curve; perfect choice for muscle cars & street rods
- Early intake valve opening & long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note
- Best with aftermarket converters & more rear gear
Rebates
Edelbrock "Garage Deals" 20% Off Select Parts Sale
Edelbrock "Garage Deals" 20% Off Select Parts Sale, running from August 25, 2026, through August 25, 2027. For a limited time, customers can save up to 20% off on select Edelbrock parts. All claims must be postmarked on or before 30 days from date of purchase. Purchases must be made between August 25, 2026 and August 25, 2027. This limited-time offer applies to qualifying Edelbrock parts purchased during the promotional period.
Guides & Documents
CARB Warning
For race/ off road use only
CARB Warning
For race/ off road use only
Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.
CA WARNING:
Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov
COMP Cams 54-601-11 Specifications
COMP Cams 54-601-11 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 54-601-11 |
| Brand | COMP Cams |
| Camshaft Type | Hydraulic Roller Tappet |
| RPM Range | 2300-6600 |
| Intake Duration (.050" Lift) | 227 |
| Exhaust Duration (.050" Lift) | 241 |
| Lobe Separation | 109 ° |
| GENERAL | |
| Intake Valve Lift w/ Rocker Arm Ratio | 0.563" |
| Exhaust Valve Lift w/ Rocker Arm Ratio | 0.546" |
| Intake Duration | 283 |
| Exhaust Duration | 303 |
| Sold in Quantity | Each |
| Grind Number | 283THR9 |
| GTIN Code | 036584195177 |
| External Ignition Box Required | Yes |
| Valve Springs Required | Yes |
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