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Howards Cams American Muscle Hydraulic Flat Tappet Camshaft
Near duplicates of some of the most iconic original equipment camshaft grinds from the '60's to the early '70's. Howards Cams took these fantastic grinds and made slight changes to the ramp speeds and minor duration changes to give you better reliability and horsepower. You still get the same throttle response and of course the original style exhaust rumble. Great cams for restoration projects and perfect for the street machines.
Manufactured on Dedicated High Precision Machines
Held to Strict Tolerances
High grade quality cores
100% Rockwell Tested & Parkerized Ensuring the Highest Quality
Hard protective packaging
Part Type: Camshaft
Cam Series: American Muscle
Application: Chevrolet Small Block 262-400 1955-1998
Ignition Firing Order: OE (1-8-4-3-6-5-7-2)
Cam Style: Hydraulic Flat Tappet
Basic RPM Range: 600-4800
Manufacturer's Description: Smooth idle, near duplicate of the Chev L75 300HP/327 cam (GM#3733431/3896929).
Intake Duration @ .050": 194
Exhaust Duration @ .050": 203
Advertised Intake Duration (@ .006"): 256
Advertised Exhaust Duration (@ .006"): 262
Intake Valve Lift with OE Rocker Ratio (1.50): .390"
Exhaust Valve Lift with OE Rocker Ratio (1.50): .410"
Intake Lobe Lift: .260"
Exhaust Lobe Lift: .273"
Intake Valve Lift with 1.55 Rocker Ratio: .403"
Intake Valve Lift with 1.60 Rocker Ratio: .416"
Intake Valve Lift with 1.65 Rocker Ratio: .429"
Exhaust Valve Lift with 1.55 Rocker Ratio: .424"
Exhaust Valve Lift with 1.60 Rocker Ratio: .437"
Exhaust Valve Lift with 1.65 Rocker Ratio: .451"
Lobe Separation Angle: 112 Degrees
Intake Centerline: 108 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: 117071-12
Weight: 10.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
Note: Stock (O.E.) valve springs cannot be used.
Note: Oil with ZDDP or ZDDP Additive Required.
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