ok. I just gotta ask this. if there was a roller lifter that fit in the lifter bores on our y-blocks, y couldnt we use them on our solid lifter camshafts? all that would change would be the pushrod length right? wat isthe lifter bore size for the y-block?

 

No. It would require at the least a roller cam lobe profile. The lifter bores would have to be modified extensively. Find yourself a shop manual and study the design. Unique to say the least.

 

I think that there was talk about someone making roller lifters for a y-block long ago. I think I remember hearing that the tooling got lost, but it's been done.

And the materials used in roller setups is very different than the materials used in flat tappet gear.