S&S .625 inch lift cam is designed for 96 inch or larger engines with compression ratios between 10.0 and 10.75:1. 3000-6000 rpm.
This 625GE Gear Drive Easy Start cam is designed to greatly improve valve timing accuracy by eliminating timing chain lash and Easy Start Cams allow stock starter to start any engine. Complete kit includes cams with inner gears and installation kit.
Features and benefits include:
- Improves valve timing accuracy by eliminating timing chain lash
- Easy Start Cams allow stock starter to start any engine
- No tensioner shoes to wear out or fail
- For 2006 Harley-Davidson® Dyna® and 2007-'16 big twins
Note: Special valve springs will be needed.
Fuel injection tuning required.
Pinion shaft run-out must be checked before installing S&S® gear drive cams.
A hydraulic press and other professional tools are required to install S&S
gear drive cams. Additionally, material must be removed from the inner
surface of the stock gearcover. The stock crankcase may require clearancing
for S&S .625", .640", and .675" lift cams. S&S recommends that gear drive
cams be installed by a professional mechanic.
Due to the inheraent characteristics of gear drives, you may experience
more valve train noise with gear driven cams. Oversized and undersized
gears are available to help achieve correct gear lash. We have found that
with 160 lb. of valve seat force, the S&S gear drive cams will perform well
up to 6200 rpm. If higher rpm is anticipated, valve springs that provide
higher seat force should be used.
S&S can do a special order cam. Contact your S&S Customer Service
Representative for more information.
Not legal for sale or use on CA or EPA pollution controlled motorcycles.