Comp Cams 11-674-4 BBC Xtreme Energy Mechanical Flat Tappet Camshaft XS256S

This Comp Cams 11-674-4 BBC XS256S Xtreme Energy Mechanical Flat Tappet Camshaft fits 396-454 cubic inch Mark IV Big Block Chevy engines from 1967-1996. Comp designed this cam for street/strip use, and it features strong torque through low and mid-range with a good idle. A 9.0:1+ compression ratio and a 1500+ stall speed torque converter are highly recommended.

Comp Cams 11-674-4 BBC XS256S Xtreme Energy Mechanical Flat Tappet Camshaft Specs:

• For Big Block Chevy 396-454 engines from 1967-1996
• Basic RPM Range: 1000 to 5600
• Valve Lift Intake: .527
• Valve Lift Exhaust: .532
• Intake Duration: 256
• Exhaust Duration: 262
• Intake Duration at .050”: 218
• Exhaust Duration at .050”: 224
• Lobe Separation: 110
• Intake Centerline: 106
• Firing Order: 1-8-4-3-6-5-7-2
• Made in the USA

Note: Stock (O.E.) valve springs can NOT be used

Comp Cams designed their Mechanical Flat Tappet camshafts for high performance on the street and drag strip.

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