* More mid-range and hi end power. Idle un-affected. Head setup required 1980 & 1981 engines: The height of original stock H/D valve guides restricts spring travel (and cam lift) to .430 or less!
* If you are installing cams in a shovel engine, the
m lift) , Lower Spring Collar AP-273120 and High Lift Springs AP-272110 are all available if required.
* Andrews Products pushrods are available for all Shovel engines using OEM or similar hydrualic lifters.
– Chrome Moly Push Rods AP-240030
