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Howards CamsŪ Hydraulic Flat Tappet Camshaft & Lifter Set
From the humble beginnings to an industry leader today, Howards CamsŪ has not forgotten the customer. Howards CamsŪ main objective is to produce the highest quality product at a reasonable price. The name Howards CamsŪ had been synonymous with high performance camshafts since 1945. A great number of valve train innovations can be traced back to Howards CamsŪ. From pioneers in drag racing and oval track cams to cutting edge marine development, Howards CamsŪ is at the forefront of the camshaft industry.
Note: Always use Camshaft Break-In Lube with all new flat tappet cams.
Manufactured on Dedicated High Precission Machines
Held to Strick Tolerances
High grade quality cores
Rockwell Tested & Parkerized Ensuring the Highest Quality
Hard protective packaging
Part Type: Camshaft & Lifter Set
Application: American Motors (AMC) V8 290-401 1966-1991
Ignition Firing Order: OE (1-8-4-3-6-5-7-2)
Cam Style: Hydraulic Flat Tappet
Basic RPM Range: 2200-6200
Manufacturer's Description: Strong low & mid-range torque & horsepower. Manual or auto with stall.
Intake Duration @ .050": 235
Exhaust Duration @ .050": 243
Advertised Intake Duration (@ .006"): 289
Advertised Exhaust Duration (@ .006"): 297
Intake Valve Lift with OE Rocker Ratio (1.60): .520"
Exhaust Valve Lift with OE Rocker Ratio (1.60): .541"
Intake Lobe Lift: .325"
Exhaust Lobe Lift: .338"
Intake Valve Lift with 1.65 Rocker Ratio: .536"
Intake Valve Lift with 1.70 Rocker Ratio: .553"
Intake Valve Lift with 1.72 Rocker Ratio: .559"
Exhaust Valve Lift with 1.65 Rocker Ratio: .558"
Exhaust Valve Lift with 1.70 Rocker Ratio: .575"
Exhaust Valve Lift with 1.72 Rocker Ratio: .582"
Lobe Separation Angle: 112 Degrees
Intake Centerline: 107 Degrees
Small Base Circle: No
Lifters Included: Yes, 91711
Cam Gear Attachment: Single-Bolt
Valve Adjustment: Zero Lash Plus ― Turn
Manufacturer: Howards Cams & Racing ComponentsŪ
Manufacturer's Part Number: 310031-12
Weight: 10.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Set
Note: Oil with ZDDP or ZDDP Additive Required.
Note: Stock (O.E.) valve springs cannot be used
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