Howards Cams Steel Billet Mechanical Roller Camshaft
All Howards mechanical roller cams are ground on the billet still cores in house at Howards Cams. Mechanical roller cams are designed and mainly used in full competition applications. Real race conditions are extremely punishing to the valvetrain and the camshaft. So why would you use a cast core? No matter how good the heat-treatment, a cast care (SADI) will not provide the performance or durability of an American steel billet cam. Why are some cam companies using cast (SADI) cores? Lower cost, which equals higher profits. Howards Cams will not skimp on materials just for higher profits. Extreme conditions require better materials, better technology and better design. Better cam.... Great price! Made in the USA!
Part Type: Camshaft
Application: Ford Small Block Clevor 351W with Cleveland Heads
Ignition Firing Order: (1-3-7-2-6-5-4-8)
Cam Style: Steel Billet Mechanical Roller Camshaft
Basic RPM Range: 4200-8000
Manufacturers Description: Rough idle, best in large cubic inch, great to end, 12.0:1+ CR, good exhaust.
Intake Duration @ .050": 275
Exhaust Duration @ .050": 283
Advertised Intake Duration (@ .050"): 307
Advertised Exhaust Duration (@ .050"): 315
Intake Valve Lift with OE Rocker Ratio (1.73): .744"
Exhaust Valve Lift with OE Rocker Ratio (1.73): .727"
Intake Lobe Lift: .430"
Exhaust Lobe Lift: .420"
Intake Valve Lift with 1.70 Rocker Ratio: .731"
Intake Valve Lift with 1.75 Rocker Ratio: .752"
Intake Valve Lift with 1.80 Rocker Ratio: .774"
Exhaust Valve Lift with 1.70 Rocker Ratio: .714"
Exhaust Valve Lift with 1.75 Rocker Ratio: .735"
Exhaust Valve Lift with 1.80 Rocker Ratio: .756"
Lobe Separation Angle: 112 Degrees
Intake Centerline: 108 Degrees
Small Base Circle: No
Lifters Included: No
Cam Gear Attachment: Single-Bolt
Valve Adjustment: .022/.022
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: 223283-12
Weight: 14.0 lbs.
Warranty: Race Application, No warranty expressed or implied.
Quantity: Sold as Each
Note: Stock (O.E.) valve springs cannot be used.
Note: Requires upgraded distributor gear. |