Comp Cams CL12-601-8 SBC Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft and Lifter Kit

This Comp Cams CL12-601-8 SBC Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft & Lifter Kit fits the 262-400 Small Block Chevy from 1958-1998. Comp designed this cam for high performance street/strip use, and it features a rough idle. A 9.0:1+ compression ratio, intake, headers, lower rear end gears and 2400+ stall speed torque converter are highly recommended.

Comp Cams CL12-601-8 SBC Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft & Lifter Kit Specs:

• For 262-400 cubic inch Small Block Chevy engines from 1958-1998
• Includes Camshaft 12-601-8 and Lifter Set 853-16
• Requires thrust button in addition to a wear plate
• Must use bronze tip fuel pump pushrod when using high pressure or high-volume pump
• Stock (O.E.) valve springs can NOT be used.
• Basic RPM Range: 2200 to 5900
• Valve Lift Intake: .522
• Valve Lift Exhaust: .509
• Advertised Intake Duration: 291
• Advertised Exhaust Duration: 311
• Intake Duration at .050”: 235
• Exhaust Duration at .050”: 249
• Lobe Separation: 107
• Firing Order: 1-8-4-3-6-5-7-2
• Made in the USA

Comp Cams designed this Retro-Fit Hydraulic Roller camshaft for high performance on the street as well as the drag strip.

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