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Howards Cams Hydraulic Roller Camshaft
All Howards™ cams are ground at Howards Cams™, not re-boxed like some cam companies. All Howards™ cams use the highest-grade race quality cores available. Howards™ cams are manufactured on dedicated high precision cam grinding machines. Most Howards™ cams are packaged and shipped in our unique, hard, high impact plastic reusable cases. This ensures that the high quality camshaft that went into the case comes out in the same condition, when delivered, as when it was packed.
Manufactured on Dedicated High Precision Machines
Held to Strict Tolerances
High grade quality cores
Rockwell Tested Ensuring the Highest Quality
Part Type: Camshaft
Application: Ford SB 221-302 1963-1995, 351W 1969-1993
Ignition Firing Order: OE (1-3-7-2-6-5-4-8)
Cam Style: Hydraulic Roller
Basic RPM Range: 3000-7000
Manufacturers Description: Small Base Circle, Upper mid-range & top end power. Needs 11.0:1+ CR.
Intake Duration @ .050": 251
Exhaust Duration @ .050": 257
Advertised Intake Duration (@ .006"): 304
Advertised Exhaust Duration (@ .006"): 310
Intake Valve Lift with OE Rocker Ratio (1.60): .592"
Exhaust Valve Lift with OE Rocker Ratio (1.60): .592”
Intake Lobe Lift: .370"
Exhaust Lobe Lift: .370"
Intake Valve Lift with 1.65 Rocker Ratio: .611"
Intake Valve Lift with 1.70 Rocker Ratio: .629"
Intake Valve Lift with 1.72 Rocker Ratio: .636"
Exhaust Valve Lift with 1.65 Rocker Ratio: .611"
Exhaust Valve Lift with 1.70 Rocker Ratio: .629"
Exhaust Valve Lift with 1.72 Rocker Ratio: .636"
Lobe Separation Angle: 112 Degrees
Intake Centerline: 108 Degrees
Lifters Included: No
Small Base Circle: Yes
Cam Gear Attachment: Single-Bolt
Valve Adjustment: Zero Lash Plus ˝ Turn
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: 220355-12S
Weight: 10.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
Note: Stock (O.E) valve springs cannot be used.
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