My attempt at speedmaster heads and moving the pushrod.

RustyRatRod said

I have to be lead by the hand. Are you machining bar stock and pressing it into the pushrod holes? Then reboring the pushrod holes?

Click to expand...

Yes, I bought 15mm aluminum round stock (.600" dia), drilled the pushrod holes out with a 17/32 drill bit, then turned the bar stock down to roughly .532 dia, then pressed them into the holes.