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Howards Cams American Muscle Mechanical Flat Tappet Camshaft & Lifter Kit
Near duplicated of some of the most iconic original equipment camshafts grinds from the ‘60s to the early ‘70s. We 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
Rockwell Tested & Parkerized Ensuring the Highest Quality
Includes Matching Premium Lifters
Part Type: Camshaft and Lifter Set
Application: Chevrolet Big Block Mark IV 396-502 1965-1996
Ignition Firing Order: OE (1-8-7-3-6-5-4-2)
Cam Style: Mechanical Flat Tappet
Basic RPM Range: 2800-6800
Manufacturers Description: Near duplicate of the Chev L88 430HP/427 cam (GM #3928911).
Intake Duration @ .050": 264
Exhaust Duration @ .050": 270
Advertised Intake Duration (@ .006"): 342
Advertised Exhaust Duration (@ .006"): 333
Intake Valve Lift with OE Rocker Ratio (1.70): .579"
Exhaust Valve Lift with OE Rocker Ratio (1.70): .600"
Intake Lobe Lift: .341"
Exhaust Lobe Lift: .352"
Intake Valve Lift with 1.72 Rocker Ratio: .587"
Intake Valve Lift with 1.75 Rocker Ratio: .597"
Intake Valve Lift with 1.80 Rocker Ratio: .614"
Exhaust Valve Lift with 1.72 Rocker Ratio: .607"
Exhaust Valve Lift with 1.75 Rocker Ratio: .618"
Exhaust Valve Lift with 1.80 Rocker Ratio: .635"
Lobe Separation Angle: 112 Degrees
Intake Centerline: 108 Degrees
Lifters Included: Yes, 91118 Direct Lube Mechanical Flat Tappet
Small Base Circle: No
Cam Gear Attachment: 3-Bolt
Valve Adjustment: .022/.026
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: CL127522-12DL
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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