Some cam gears need drilling out to except the offset bushings , looking @ the front of engine cam will go clockwise for advance , so 'fat' part of bushing will go toward the top , you can usually get a good idea on where that cam was installed , with the motor @ TDC ex stroke the intake/ex lifters will have the same height , any advance will show the intake lifter having more lift , just be sure you dialed the motor in for TDC , any variance from this will render the degreeing useless.
