Howards Cams® Hydraulic Flat Tappet Camshaft & Lifter Set
From the humble beginnings to an industry leader today, Howards Cams® has not forgotten the customer. Howards Cams® main objective is to produce the highest quality product at a reasonable price. The name Howards Cams® had been synonymous with high performance camshafts since 1945. A great number of valve train innovations can be traced back to Howards Cams®. From pioneers in drag racing and oval track cams to cutting edge marine development, Howards Cams® 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 Components®
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 |