S&S 631 Camshaft
- For high RPM applications in all street and racing engines with 11:1 and higher compression ratios
- Develops maximum performance from about 4500 RPM on up
- Great performance cam, but expect more wear and tear on valve train components
- Valve spring spacing and other normal clearance checks required
- Spring spacing is required
- For solid or hydraulic tappets
- Made in the USA
Product Note:
Specification | Details |
---|---|
Country of Origin | USA |
Engine Type | Evolution Big Twin |
Exhaust Duration | 275 degrees |
Exhaust Lift | .221 in. |
Exhaust Lobe Center | 108.5 degrees |
Exhaust Timing (Close) | 29 degrees |
Exhaust Timing (Open) | 66 degrees |
Intake Duration | 275 degrees |
Intake Lift | .281 in. |
Intake Lobe Center | 103.5 degrees |
Intake Timing (Close) | 61 degrees |
Intake Timing (Open) | 34 degrees |
Valve Lift | .630 in. |
Vehicle Fitment
Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.
Harley Davidson
Harley Davidson
- CVO FXR2 1999
- CVO FXR3 1999
- FLHR Electra Glide Road King 1994
- FLHR Road King 1995-1998
- FLHRCI Road King Classic 1998
- FLHRI Road King 1996-1997
- FLHS Electra Glide Sport 1987-1993
- FLHT Electra Glide 1986-1987
- FLHT Electra Glide Standard 1995-1998
- FLHTC Electra Glide Classic 1984-1998
- FLHTCI Electra Glide Classic 1996-1998
- FLHTCU Ultra Classic Electra Glide 1989-1997
- FLHTCUI Ultra Classic Electra Glide 1995-1998
- FLST Heritage Softail 1986-1990
- FLSTC Heritage Softail Classic 1988-1999
- FLSTF Softail Fat Boy 1990-1999
- FLSTN Heritage Softail Nostalgia 1993
- FLSTN Heritage Softail Special 1994-1996
- FLSTS Heritage Springer Softail 1997-1999
- FLTC Tour Glide Classic 1984-1991
- FLTCU Ultra Classic Tour Glide 1989-1995
- FLTCUI Ultra Classic Tour Glide 1996
- FLTR Road Glide 1998
- FLTRI Road Glide 1998
- FXD Dyna Super Glide 1995-1998
- FXDB Dyna Daytona 1992
- FXDB Dyna Sturgis 1991
- FXDC Dyna Glide Custom 1992
- FXDL Dyna Low Rider 1993-1998
- FXDS-CONV Dyna Convertible 1994-1998
- FXDWG Dyna Wide Glide 1993-1998
- FXLR Low Rider Custom 1987-1994
- FXRC Low Rider Chrome 1987
- FXRD Grand Touring Edition 1986
- FXRDG Disc Glide 1984
- FXRS Low Glide 1984-1992
- FXRS-CONV Low Rider Convertible 1990-1993
- FXRS-SP Low Rider Sport Edition 1986-1993
- FXRT Sport Glide 1984-1992
- FXST Softail Standard 1999
- FXSTB Softail Night Train 1999
- FXSTC Softail Custom 1986-1999
- FXSTS Springer Softail 1988-1999
- FXSTSB Softail Bad Boy 1995-1997
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