Comp Cams 54-471-11 GM LS Gen III/IV LSr Rectangular Port Hydraulic Roller Camshaft 289LRR HR14

This Comp Cams 54-471-11 LSR Rectangular Port All Out Power Hydraulic Roller Camshaft fits the Gen III/IV LS engines from 1997 through Present. Comp designed this cam specifically for street/strip use with Rectangular Port Cylinder Heads, and it features broad top end power range for high rpm. A 10.5:1+ compression ratio and a 2800+ stall speed torque converter are highly recommended.

Comp Cams 54-471-11 Gen III/IV LSR Hydraulic Roller Camshaft Specs:

• For Gen III/IV LS engines from 1997 through Present
• For use with Rectangular Port Cylinder Heads
• 3-Bolt Camshaft Gear Attachment
• Basic RPM Range: 2400 to 7200
• Valve Lift Intake: .624
• Valve Lift Exhaust: .624
• Intake Duration: 289
• Exhaust Duration: 305
• Intake Duration at .050”: 239
• Exhaust Duration at .050”: 255
• Lobe Separation: 114
• Intake Centerline: 110
• 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.