S&S Cycle 640 Cam For Harley Big Twin Evo 1984-1999

Name: S&S Cycle 640 Cam For Harley Big Twin Evo 1984-1999
Brand: S&S Cycle
SKU: 959720
Price: 299.95 USD
Availability: InStock

Item: P274061

0 Read 0 Reviews Write a Review

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 no… Read More

How to Measure Crankshaft Runout When Choosing a Harley Cam : Weekend Wrenching

S&S Cycle 640 Cam For Harley Big Twin Evo 1984-1999

Fullscreen Zoom

$299^.⁹⁵

Rebate Available! View Details

Will Not Fit Change Vehicle

This item Ships FREE

Guaranteed Low Price

How to Measure Crankshaft Runout When Choosing a Harley Cam : Weekend Wrenching

Product Details

Product Description

Part Numbers

Fitment

Installation

S&S 640 Cam For Harley Big Twin Evo

Features:

For large displacement motors with compression ratios of 10.5-11.5:1
Can be used in smaller motors with 11:1-12:1 compression ratio
The S&S 640 cam features the latest design in controlled ramps and is intended for hydraulic lifters
With lower TDC lifts and faster ramps than the S&S 631 cam, the 640 cam builds higher cylinder pressure
Therefore it does not require as much compression as the 631

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	J&P Cycles Item #	Catalog Number	Store Sku	MFR. Product #	Availability
Product Style S&S Cycle 640 Cam For Harley Big Twin Evo 1984-1999	J&P Cycles Item #959720	Catalog Number432-637	Store Sku	MFR. Product #33-5108	AvailabilityIn Stock: Ships within 24 hours

This product DOES NOT FIT your 1988 Suzuki Cavalcade GT GV1400GT

Fitment Notes & Exceptions

Installer must check for coil bind, valve-to-valve clearance, valve-to-piston clearance, and cam lobe to case clearance
Cam bearings and gaskets must be replaced when installing new cams
Works with hydraulic lifters
High-lift valve springs are required to run this cam in all models

This Product Fits

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 1989-1998; 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 1987-1994; Low Rider Sport FXRS-SP 1987-1993; Road Glide FLTR/I 1998; Road King Classic FLHRC/I 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 Deuce FXSTD/I 1999; Softail Fat Boy FLSTF/I 1990-1999; Softail Heritage Classic FLSTC/I 1987-1999; Softail Heritage FLST/I 1986, 1987, 1988, 1989, 1990; Softail Heritage Springer FLSTS/I 1997, 1998, 1999; Softail Night Train FXSTB/I 1999; Softail Nostalgia FLSTN/I 1993; Softail Special FLSTN/I 1994, 1995, 1996; 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, 1985, 1986; Tour Glide Ultra Classic FLTCU/I 1989-1996; Wide Glide FXWG 1984, 1985, 1986

S&S Cycle 640 Cam For Harley Big Twin Evo 1984-1999 Installation

Installation (pdf)

Product Description

Part Numbers

Fitment

Installation

0 Customer Reviews

0 Questions & 0 Answers

Reviews & Questions

0 Customer Reviews

0 Questions & 0 Answers

$39.99/yr.

Spend Less. Ride More.

5% RPM Cash Back*
10% Off Over 70 Brands
$15 in RPM Cash When You Join
Free 2-Day Shipping & Free Returns*
And more!

Become a member today! Add RPM to cart

By purchasing and enrolling in Riders Preferred Membership, you agree to the Program Terms and Conditions. *Some exclusions apply: 10% RPM discount applies on full price and sale price Exclusive Brands. 10% RPM discount applies on additional select brands at full price. Exclusions apply. RPM free 2-day shipping applies on qualifying items, contiguous U.S. only. Not available for AK, HI, or U.S. Territories. View shipping policies. RPM free returns apply on qualifying items and are processed on standard return timeline, contiguous U.S. only. View return policy.

S&S Cycle 640 Cam For Harley Big Twin Evo 1984-1999

Product Details

S&S 640 Cam For Harley Big Twin Evo

Features:

640 Cam Info:

S&S Cycle 640 Cam For Harley Big Twin Evo 1984-1999 Installation

Related Videos

Reviews & Questions