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Shipping & Returns
S&S Cycle 640 Camshaft For Harley Big Twin Evo
S&S has been in the business of making Harley-Davidson motorcycles go fast for a very long time, and their innovation in the world of bumpsticks is not exactly a secret. If you're looking for more power from your bike, a cam is a wonderful place to start - especially if you've already done most of the easy 'bolt-on' modifications. Installing an S&S cam is a surefire way to make your mill suit your riding style while getting maximum output.
- S&S cams are tested on the dyno, street and track before being offered to the public
- With hundreds of hours of testing on each cam, you know you are getting the best cam S&S can produce
- Made in the USA
640 Cam Info:
- Designed for large-displacement engines (110") with 10.5:1-11.5:1 compression ratio or smaller engines (96"-107") with 11:1-12:1 compression ratio
- 3000 RPM-6000 RPM
- Does not require as much compression as 631 cam and provides more linear power delivery
- Less overlap and fast ramps build higher cylinder pressure
- Lower TDC lift makes installation easier
- Intake open/close 25°/60°
- Exhaust open/close 65°/20°
- Intake duration 265°
- Exhaust duration 265°
- Lift .640"
|Product Style||RevZilla Item #||MFR. Product #||Availability|
|Product Style S&S 640 Cam For Harley Big Twin Evo 1984-1999||RevZilla Item #959720||MFR. Product #33-5108||AvailabilityIn Stock: Ships next business day|
- Harley Davidson
- Disc Glide FXRDG 1984
- Dyna Convertible FXDS 1994, 1995, 1996, 1997, 1998
- Dyna Glide Custom FXDC 1992
- Dyna Glide Daytona FXDB-D 1992
- Dyna Glide Sturgis FXDB-S 1991
- Dyna Low Rider FXDL/I 1993-1998
- Dyna Super Glide FXD/I 1995, 1996, 1997, 1998
- Dyna Wide Glide FXDWG/I 1993-1998
- Electra Glide Classic FLHTC/I 1984-1998
- Electra Glide Special FLHX 1984
- Electra Glide Sport FLHS 1984-1993
- Electra Glide Standard FLHT/I 1984-1998
- Electra Glide Ultra Classic FLHTCU/I 1987-1998
- Fat Bob FXEF 1985
- FLH 1984, 1985
- Low Glide/Low Rider FXRS 1984-1993
- Low Rider Chrome FXRC 1985, 1986, 1987, 1988
- Low Rider Custom FXLR 1986-1994
- Low Rider Sport FXRS-SP 1987-1993
- Road Glide FLTR/I 1998
- Road King Classic FLHRC/I 1994, 1995, 1996, 1997, 1998
- Road King Custom FLHRS/I 1995, 1996, 1997, 1998
- Road King FLHR/I 1994, 1995, 1996, 1997, 1998
- Softail Bad Boy Springer FXSTSB 1995, 1996, 1997
- Softail Custom FXSTC/I 1986-1999
- Softail Custom/Nostalgia/Special/Deluxe FLSTN/I 1993, 1994, 1995, 1996
- Softail Deuce FXSTD/I 1999
- Softail Fat Boy FLSTF/I 1990-1999
- Softail Heritage Classic FLSTC/I 1986-1999
- Softail Heritage FLST/I 1986, 1987, 1988, 1989, 1990
- Softail Heritage Springer FLSTS/I 1997, 1998, 1999
- Softail Night Train FXSTB/I 1999
- Softail Springer FXSTS/I 1988-1999
- Softail Standard FXST/I 1984-1999
- Sport Glide FXRT 1984-1992
- Sport Glide Grand Touring FXRD 1986
- Super Glide FXE 1984, 1985
- Super Glide FXR 1994
- Tour Glide Classic FLTC/I 1984-1991
- Tour Glide FLT 1984-1991
- Tour Glide Ultra Classic FLTCU/I 1989-1995
- Wide Glide FXWG 1984, 1985, 1986
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