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Technical Articles for Part Number HRS-229425-14
Howards Cams Boost Hydraulic Roller Camshafts 229425-14
Part Number: HRS-229425-14
Howards Cams Boost Hydraulic Roller Camshafts
Camshafts, Cam, Ford 5.0L, Hyd Roller
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Estimated Ship Date: Dec 31, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
229425-14
Part Type:
Product Line:
Summit Racing Part Number:
HRS-229425-14
UPC:
840793150700
Cam Style:
Hydraulic roller, OE roller
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Blower. Fair idle. Pro street or street/strip. Needs 9.5:1 compression ratio, 2800+ stall.
Basic Operating RPM Range:
2,400-6,200
Intake Duration at 050 inch Lift:
255
Exhaust Duration at 050 inch Lift:
265
Duration at 050 inch Lift:
255 int./265 exh.
Advertised Intake Duration:
307
Advertised Exhaust Duration:
317
Advertised Duration:
307 int./317 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.640 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.640 in.
Valve Lift with Factory Rocker Arm Ratio:
0.640 int./0.640 exh.
Lobe Separation (degrees):
114
Camshaft Gear Attachment:
1-bolt
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
Can also be used for retrofit with tie-bar style lifters. Firing order must be changed to 1-3-7-2-6-5-4-8.
Howards Cams Boost Hydraulic Roller Camshafts
Howards Cams Boost hydraulic roller camshafts are available with various lifts and durations, and can provide different idles—including good, fair, rough, and lopey. They're ideal for competition and high performance builds featuring forced induction, but not intended for use with stock (OE) valve springs. Firing order, degrees of lobe separation, and intake centerline designs vary by application. Add over 70 years of race winning performance to your naturally aspirated build with the Howards Cams Boost hydraulic roller camshaft designed for your engine.
Notes:
* Compatible with stock (OE) rollers, depending on application
* Cathedral port head compatible, depending on application
* Custom programmer/tuning may be required, depending on application
Applications
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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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