Description
This Howards Cams 121153-10 BBC Steel Billet Solid Roller Camshaft fits 396-502 cubic inch Mark IV Big Block Chevy engines from 1965-1996. Howards designed this camshaft for street/strip use, and it features a rough idle and good mid-range horsepower. A 11.0:1 or higher compression ratio and a 3000+ stall speed torque converter is highly recommended.
Howards Cams 121153-10 BBC Steel Billet Solid Roller Camshaft Specs:
- For Big Block Chevy 396-502 engines from 1965-1996
- Requires Thrust Button
- Requires upgraded distributor gear/fuel pump pushrod
- Basic RPM Range: 3000 to 7000
- Valve Lift Intake: .663
- Valve Lift Exhaust: .680
- Intake Duration: 281
- Exhaust Duration: 287
- Intake Duration at .050”: 249
- Exhaust Duration at .050”: 255
- Lobe Separation: 110
- Intake Centerline: 106
- Firing Order: 1-8-4-3-6-5-7-2
- Recommended Lifter Set: 91158 SportMax Direct Lube
- Recommended Premium Lifter Set: 91135 RaceMax
- Recommended Valve Springs: 98844
- Made in the USA
Notes: Stock (O.E.) valve springs can NOT be used.
Howards Cams designed this hydraulic roller camshaft for performance on the street and drag strip.
Howards Cams – For the ultimate in performance!
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