Update:

Yesterday I had the time and went ahead with grooving the push rods using Pre68Dave's simple and easy advice. Easy to follow directions and instant results. My Dremel tool with the mini cut-off wheel made cutting a groove an easy task.

I removed the 12 pushrods two at a time, back to front being careful to return each to its original location. I'm back to hearing my old hydraulic-liftered Stovebolt sounding like a sewing machine once again.

Thanks Dave!

regards,

Cosmo

~ Cosmo
1949 Chevy Half Ton
Rocinante, like Don Quixote, he is awkward, past his prime, and engaged in a task beyond his capacities.
"...my good horse Rocinante, mine eternal and inseparable companion in all my journeys and courses." ...Don Quixote, Cervantes
"If you come to a fork in the road, take it."...Yogi Berra
"Rudeness is the weak man's imitation of strength." ...Eric Hoffer