Comp Cams 23-601-9 BBM Mutha' Thumpr Retro-Fit Hydraulic Roller Camshaft 291THR7

This Comp Cams 23-601-9 BBM Mutha' Thumpr Retro-Fit Hydraulic Roller Camshaft fits the 383-440 Big Block Chrysler from 1959-1980. Comp designed this cam for high performance street/strip use, and it features excellent mid-range torque and a rough idle. A 9.0:1 or higher compression ratio, intake, gears, and headers and a 2600+ stall speed torque converter are highly recommended.

Comp Cams 23-601-9 BBM Mutha' Thumpr Retro-Fit Hydraulic Roller Camshaft Specs:

• For 383-440 cubic inch Big Block Chrysler engines from 1959-1980
• Stock (O.E.) valve springs can NOT be used.
• Three Bolt
• Basic RPM Range: 2200 to 5900
• Valve Lift Intake: .522
• Valve Lift Exhaust: .508
• Advertised Intake Duration: 291
• Advertised Exhaust Duration: 311
• Intake Duration at .050”: 235
• Exhaust Duration at .050”: 249
• Lobe Separation: 107
• Intake Centerline: 102
• Firing Order: 1-8-4-3-6-5-7-2
• Made in the USA

Comp Cams designed this Hydraulic Roller camshaft for high performance on the street and drag strip.

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