By roller conversion, are you meaning roller cam or just roller rockers? You are showing a measurement of more than a .300" longer pushrod than what you started with. And by all accounts decking the block and probably the head by the amounts you mentioned should have taken you the other way. You might want to re-check your length again. You should also put a precision straight edge across the tops of the valve tips to see how closely they are to one another and make sure you don't have any too much shorter or longer than others to make sure you are being as accurate as you can be.


Class III CNC Machinist/Programmer