Comp Cams 54-600-11 GM LS Gen III/IV Thumpr Hydraulic Roller Camshaft 275THR9

This Comp Cams 54-600-11 Thumpr Hydraulic Roller Camshaft fits the Gen III/IV LS engines from 1997 through Present. Comp designed this cam specifically for high performance street/strip use with Cathedral Port Cylinder Heads, and it features a choppy/thumping idle. A 10.0:1+ compression ratio, gears and a 2400+ stall speed torque converter are highly recommended.

Comp Cams 54-600-11 Gen III/IV LS Thumpr Hydraulic Roller Camshaft Specs:

• For Gen III/IV LS engines from 1997 through Present
• For use with Cathedral Port Cylinder Heads
• 3-Bolt Camshaft Gear Attachment
• Basic RPM Range: 2000 to 6400
• Valve Lift Intake: .553
• Valve Lift Exhaust: .536
• Intake Duration: 275
• Exhaust Duration: 295
• Intake Duration at .050”: 219
• Exhaust Duration at .050”: 233
• Lobe Separation: 109
• Firing Order: 1-8-7-2-6-5-4-3
• Made in the USA

Notes: Stock (O.E.) valve springs can NOT be used. Requires custom programmer/tuning.

Comp Cams designed this hydraulic roller camshaft for high performance on the street and at the drag strip.

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