Howards Cams American Muscle Mechanical 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: (1-8-4-3-6-5-7-2)
Cam Style: Mechanical Flat Tappet
Basic RPM Range: 2800-6600
Manufacturer's Description: Near duplicate of the Chev Z28/LT1, 370HP/350, cam (GM #3972178).
Intake Duration @ .050": 241
Exhaust Duration @ .050": 253
Advertised Intake Duration (@ .020"): 279
Advertised Exhaust Duration (@ .020"): 291
Intake Valve Lift with OE Rocker Ratio (1.50): .460"
Exhaust Valve Lift with OE Rocker Ratio (1.50): .488"
Intake Lobe Lift: .306"
Exhaust Lobe Lift: .325"
Intake Valve Lift with 1.55 Rocker Ratio: .475"
Intake Valve Lift with 1.60 Rocker Ratio: .491"
Intake Valve Lift with 1.65 Rocker Ratio: .506"
Exhaust Valve Lift with 1.55 Rocker Ratio: .504"
Exhaust Valve Lift with 1.60 Rocker Ratio: .520"
Exhaust Valve Lift with 1.65 Rocker Ratio: .537"
Lobe Separation Angle: 116 Degrees
Intake Centerline: 112 Degrees
Lifters Included: No
Small Base Circle: No
Cam Gear Attachment: 3-Bolt
Valve Adjustment: .020/.025
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: 117222-16
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. |