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Technical Articles for Part Number HRS-222745-12S
Howards Cams Retrofit Hydraulic Roller Camshafts 222745-12S
Part Number: HRS-222745-12S
Howards Cams Retrofit Hydraulic Roller Camshafts
Camshaft, Hydraulic Roller Tappet, Small Base Circle, Advertised Duration 278/278, Lift .533/.533, Ford, 302 HO/351W, Each
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Estimated Ship Date: Dec 28, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
222745-12S
Part Type:
Product Line:
Summit Racing Part Number:
HRS-222745-12S
UPC:
840793134021
Cam Style:
Hydraulic roller, Retro-fit
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Small base circle. Fair idle, street performance. Best with 5-speed or 2,500+ stall.
Basic Operating RPM Range:
2,400-6,600
Intake Duration at 050 inch Lift:
225
Exhaust Duration at 050 inch Lift:
225
Duration at 050 inch Lift:
225 int./225 exh.
Advertised Intake Duration:
278
Advertised Exhaust Duration:
278
Advertised Duration:
278 int./278 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.533 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.533 in.
Valve Lift with Factory Rocker Arm Ratio:
0.533 int./0.533 exh.
Lobe Separation (degrees):
112
Camshaft Gear Attachment:
1-bolt
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Howards Cams Retrofit Hydraulic Roller Camshafts
Howards Cams retrofit hydraulic roller camshafts offer more lift and more power for less money. These street performance grinds are perfect for those wanting to upgrade to hydraulic roller cams. Manufactured using the highest grade race-quality cores, Howards precision-grinds their cams to provide the quality and performance that you want at a reasonable price. Overhaul your valvetrain for mild to wild street performance with Howards Cams retrofit hydraulic roller camshafts. Hundreds of models are available for a wide range of vehicles from the 1950s and up.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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