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Howards Cams 4/7 Swap Hydraulic Roller Camshaft
By switching the firing order (1-8-7-3-6-5-4-2) on your favorite Chev V8, you will discover a broader, smoother torque curve and decrease in crankshaft deflection. More aggressive profiles can be used to get the most managable horsepower available. These cams require no additional engine modifications, other than swapping the #4 ignition wire with #7.
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
Application: Pontiac V8 265-455 1955-1981
Ignition Firing Order: OE (1-8-7-3-6-5-4-2)
Cam Style: Hydraulic Roller
Basic RPM Range: 1400-5600
Manufacturers Description: Noticeable idle, broad low to mid-range power band. Needs 2000+ stall.
Intake Duration @ .050": 213
Exhaust Duration @ .050": 221
Advertised Intake Duration (@ .006"): 266
Advertised Exhaust Duration (@ .006"): 274
Intake Valve Lift with OE Rocker Ratio (1.50): .485"
Exhaust Valve Lift OE Rocker Ratio (1.50): .475"
Intake Lobe Lift: .323"
Exhaust Lobe Lift: .317"
Intake Valve Lift with 1.55 Rocker Ratio: .501"
Intake Valve Lift with 1.60 Rocker Ratio: .517"
Intake Valve Lift with 1.65 Rocker Ratio: .533"
Exhaust Valve Lift with 1.55 Rocker Ratio: .491"
Exhaust Valve Lift with 1.60 Rocker Ratio: .507”
Exhaust Valve Lift with 1.65 Rocker Ratio: .523”
Lobe Separation Angle: 110 Degrees
Intake Centerline: 106 Degrees
Lifters Included: No
Small Base Circle: No
Cam Gear Attachment: Single-Bolt
Valve Adjustment: Zero Lash Plus ½ Turn
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: 414645-10
Weight: 10.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
Note: Oil with ZDDP or ZDDP Additive Required.
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