stroked small blocks in the race cars?

[olddog]

Originally Posted by blykins

Same deal.

Any solid lifter will need lash and more spring pressure to keep the valvetrain happy. When you introduce lash into the system, then the lifter is not in contact with the cam lobe all the time. Add spring pressure to that and you get a hammering effect on the lifter's roller bearings. Over time, it hammers them down. Even the most expensive lifters made for "street use" will not last a long time.

With the amount of research that I've done on hydraulic roller cams in the past several years, there's no need to run a hydraulic solid roller unless it's a race application where aggressive cam lobes are necessary. I've had my FE engines at 7500 rpm with a hydraulic roller camshaft.

I believe I fixed a typo. Delete to word hydraulic (in red) and insert the word solid in bold. I couldn't find a way to strike through a word.
Excuse me if I am wrong.

I might add a hydraulic lifter acts as a dampener to reduce the shockwave of metal hitting metal. I think the oil pressure in the hydraulic lifter holds the lifter in contact with the cam, but I'm not certain of that.