Howards Cams Hydraulic Flat Tappet Camshaft & Lifter Set
Howards Cams most popular computer designed performance hydraulic 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 hydraulic flat tappet performance cam and a set of premium hydraulic 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
Application: Pontiac V8 265-455 1955-1981
Ignition Firing Order: OE (1-8-4-3-6-5-7-2)
Cam Style: Hydraulic Flat Tappet
Basic RPM Range: 1600-5000
Manufacturers Description: American Muscle, Near duplicate of the Pontiac Ram Air I/II 375HP/389 cam (GM# 9779067).
Intake Duration @ .050": 198
Exhaust Duration @ .050": 208
Advertised Intake Duration (@ .006"): 271
Advertised Exhaust Duration (@ .006"): 280
Intake Valve Lift with OE Rocker Ratio (1.50): .404"
Exhaust Valve Lift with OE Rocker Ratio (1.50): .408"
Intake Lobe Lift: .269"
Exhaust Lobe Lift: .272"
Intake Valve Lift with 1.55 Rocker Ratio: .417"
Intake Valve Lift with 1.60 Rocker Ratio: .430"
Intake Valve Lift with 1.65 Rocker Ratio: .444"
Exhaust Valve Lift with 1.55 Rocker Ratio: .422"
Exhaust Valve Lift with 1.60 Rocker Ratio: .435"
Exhaust Valve Lift with 1.65 Rocker Ratio: .449"
Lobe Separation Angle: 111 Degrees
Intake Centerline: 98 Degrees
Lifters Included: No
Small Base Circle: No
Cam Gear Attachment: 3-Bolt
Valve Adjustment: Zero Lash Plus 1/2 Turn
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: 417701-11
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. |