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COMP Cams 11-600-4 Thumpr 227/241 Hydraulic Flat Cam for Chevrolet Big Block 396-454
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Enter your Engine Family Number and we will confirm whether this exact converter is street-legal for your vehicle.
High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.
Thumpr 227/241 Hydraulic Flat Cam for Chevrolet Big Block 396-454. High performance street, stock converter ok, best with 2000+ converter and Gears. Choppy/thumping idle.
Specifications
| Camshaft Series | Thumpr |
| Usage | Street/Performance |
| Cam Type | Hydraulic Flat Tappet |
| Grind Number | 279TH7 |
| Basic Operating RPM Range | 1,800-5,600 R3 |
| Intake Duration at .050 Inch Lift | 227 DD |
| Exhaust Duration at .050 inch Lift | 241 DD |
| Advertised Intake Duration | 279 DD |
| Advertised Exhaust Duration | 297 DD |
| Lobe Separation | 107 DD |
| Intake Valve Lift | 0.498 IN |
| Exhaust Valve Lift | 0.483 IN |
| Lifters Included | No |
| Valve Springs Required | Yes |
| Assembly Lubricant Included | Yes |
| Camshaft Gear Attachment | 3-Bolt |
| Camshaft Material | Cast Iron |
| Cam and Lifter Kit Upgrade | CL11-600-4 |
| Cam, Lifter and Gear Drive Upgrade | GK11-600-4 |
| Lifter Type | Hydraulic Flat Tappet |
| Engine Family | Chevrolet 396-454 c.i. 8 Cylinder (1967-1996) |
| K-Kit Upgrade | K11-600-4 |
| Grind Number | 279TH7 |
⚠️ California Proposition 65 Warning
California Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.
Warranty: 12 Months
Please check the product description for the manufacturer’s application details, or ask a specialist — we’ll confirm whether it fits your vehicle before you buy.
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