Howards Cams™ Hydraulic Flat Tappet Camshaft
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 Precision Machines
Held to Strict Tolerances
High grade quality cores
Rockwell Tested & Parkerized Ensuring the Highest Quality
Part Type: Camshaft
Application: Buick 400-430-455 1967-1976
Ignition Firing Order: OE (1-8-4-3-6-5-7-2)
Cam Style: Hydraulic Flat Tappet
Basic RPM Range: 1200-5200
Manufacturer's Description: Fair idle, performance street, strong torque curve.
Intake Duration @ .050": 221
Exhaust Duration @ .050": 221
Advertised Intake Duration (@ .006"): 275
Advertised Exhaust Duration (@ .006"): 275
Intake Valve Lift with OE Rocker Ratio (1.60): .501"
Exhaust Valve Lift with OE Rocker Ratio (1.60): .501"
Intake Lobe Lift: .313"
Exhaust Lobe Lift: .313"
Intake Valve Lift with 1.65 Rocker Ratio: .517"
Intake Valve Lift with 1.70 Rocker Ratio: .532"
Intake Valve Lift with 1.72 Rocker Ratio: .539"
Exhaust Valve Lift with 1.65 Rocker Ratio: .517"
Exhaust Valve Lift with 1.70 Rocker Ratio: .532"
Exhaust Valve Lift with 1.72 Rocker Ratio: .539"
Lobe Separation Angle: 108 Degrees
Intake Centerline: 104 Degrees
Includes Lifters: No
Small Base Circle: No
Cam Gear Attachment: Single-Bolt
Valve Adjustment: Zero Lash Plus ˝ Turn
Manufacturer: Howards Cams & Racing Components™
Manufacturer's Part Number: 550991-08
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.