Below is an overview of the key factors from the attachment...
The S&S® gear drive cams offer many advantages over the original cam chain drive system:
The S&S® gear drive cams offer many advantages over the original cam chain drive system:
- Reduced maintenance. There are no chain guides or shoes to wear or replace and no debris from wearing guides or shoes in your engine oil.
- Consistent cam timing. Cam gears are keyed with a light press fit. Chain and tensioner induced variations are no longer a problem.
- Eliminating the chains and tensioners eliminates excessive side loading of cam bearings.
- Critical sprocket alignment is unnecessary. Use of precision machined spacers is eliminated.
- Maintain accurate valve timing when using high performance valve springs with higher spring forces.
- Higher cam lifts can be used without decreasing cam base circle. Gear driven rear cam rotates in opposite direction from chain driven cam. Lobes on front and rear cams never point toward each other, allowing increased lobe height.