Hughes rocker arm pedestal shims

I've actually also wondered if the machine shop knew they were going to mill the heads if they should have accounted for the difference with the installed height of the valve stems themselves. If they were to be surfaced a bit too it seems like things would be way more in line but to mill the heads but leave the valves at stock length already throws things off right from the start.

if, your valves were set up right to start w/, your answer is pushrod length. might be worth checking to see if they were (are) right. sha:banghead:ving the heads shouldn`t change they valve set up , but it will and move your rocker arms closer to the cam!