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COMP Cams K12-601-4 Mutha' Thumpr 235/249 Hydraulic Flat Cam K-Kit for Chevrolet Small Block
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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/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
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.
Specifications
| Assembly Lubricant Included | Yes |
| Camshaft Gear Attachment | 3-Bolt |
| Camshaft Material | Cast Iron |
| Lifter Type | Hydraulic Flat Tappet |
| Gaskets Included | No |
| Engine Family | Chevrolet 262-400 c.i. 8 Cylinder (1958-1998) |
| Kit Type | K-Kit - Complete Kit |
| Camshaft Series | Thumpr |
| Usage | Street/Strip |
| Cam Type | Hydraulic Flat Tappet |
| Basic Operating RPM Range | 2,200-6,100 R3 |
| Intake Duration at .050 Inch Lift | 235 DD |
| Exhaust Duration at .050 inch Lift | 249 DD |
| Advertised Intake Duration | 287 DD |
| Advertised Exhaust Duration | 305 DD |
| Lobe Separation | 107 DD |
| Intake Valve Lift | 0.489 IN |
| Exhaust Valve Lift | 0.476 IN |
| Lifters Included | Yes |
| Valve Springs Included | Yes |
⚠️ 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
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Shipping: Free to the USA.
Orders are processed during normal business days. Delivery dates may vary by carrier and destination.
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