Hi,
A solid roller set up is normally used for race motors only, as they need to be taken apart and inspected every season, [a couple thousand miles] as the rollers will fall apart. Normally the valve springs are replaced every few months or on very high rpm motors every 25 1/4 mile runs.
Ford sells the motors with no warranty as race motors not for use on streets for a good reason. Too bad nobody explained the high maintanence of running that set up.
Good luck on your rebuild.
Perry.
