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Howards Cams Mechanical Flat Tappet Camshaft & Lifter Set
Howards Cams most popular computer designed performance mechanical flat tappet cams are available as cam and lifter sets. These sets offer sizable torque, horsepower, and rpm increases at an affordable price. Each set includes a mechanical flat tappet performance cam and a set of premium lifters.
Manufactured on Dedicated High Precision Machines
Held to Strict Tolerances
High grade quality cores
Rockwell Tested & Parkerized Ensuring the Highest Quality
Includes Matching Premium Lifters
Part Type: Camshaft and Lifter Set
Application: Chevrolet Big Block 396-502 1965-1996
Ignition Firing Order: OE (1-8-4-3-6-5-7-2)
Cam Style: Mechanical Flat Tappet
Basic RPM Range: 4000-7400
Manufacturers Description: Competition use, great mid & upper rpm horsepower. 12.5-1-up needed.
Intake Duration @ .050": 268
Exhaust Duration @ .050": 276
Advertised Intake Duration (@ .006"): 303
Advertised Exhaust Duration (@ .006"): 311
Intake Valve Lift with OE Rocker Ratio (1.70): .650"
Exhaust Valve Lift with OE Rocker Ratio (1.70): .670"
Intake Lobe Lift: .382"
Exhaust Lobe Lift: .341"
Intake Valve Lift with 1.72 Rocker Ratio: .658"
Intake Valve Lift with 1.75 Rocker Ratio: .669"
Intake Valve Lift with 1.80 Rocker Ratio: .688"
Exhaust Valve Lift with 1.72 Rocker Ratio: .678"
Exhaust Valve Lift with 1.75 Rocker Ratio: .690"
Exhaust Valve Lift with 1.80 Rocker Ratio: .709"
Lobe Separation Angle: 112 Degrees
Intake Centerline: 108 Degrees
Lifters Included: Yes, 91115, Performance Mechanical Flat Tappet
Small Base Circle: No
Cam Gear Attachment: 3-Bolt
Valve Adjustment: .022/.022
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: CL122152-12
Weight: 10.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
Note: Oil with ZDDP or ZDDP Additive Required
Note: Stock (O.E.) valve springs cannot be used.
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