About this product
This Howards Cams 112581-12 SBC Hydraulic Flat Tappet Camshaft fits 262-400 cubic inch Small Block Chevy engines from 1955-1998. Howards designed this camshaft for hot street use, and it features a good idle and throttle response. A 4 barrel carburetor, headers and 2000+ stall speed torque converter are highly recommended.
Howards Cams 112581-12 SBC Hydraulic Flat Tappet Camshaft Specs:
- For Small Block Chevy 262-400 engines from 1955-1998
- Basic RPM Range: 1600 to 6000
- Valve Lift Intake: .465
- Valve Lift Exhaust: .470
- Intake Duration: 279
- Exhaust Duration: 289
- Intake Duration at .050”: 225
- Exhaust Duration at .050”: 235
- Lobe Separation: 112
- Intake Centerline: 108
- Firing Order: 1-8-4-3-6-5-7-2
- Recommended Lifter Set: 91111 Performance
- Recommended Premium Lifter Set: 91112 Max Effort
- Recommended Valve Springs: 98214
- Recommended Valve Spring, Retainer and Lock Kit: 98214-K11
- Made in the USA
Note: Stock (O.E.) valve springs can NOT be used
Howards Cams designed this Flat Tappet camshaft for street performance. This camshaft features a 112 degree lobe separation to help maintain vacuum.
Howards Cams - For the ultimate in performance!
Description supplied by Winners Circle through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.






