Crower stainless shaft rockers are hard to beat, check the cycle life of an aluminum rocker vs steel.

I called them yesterday and got a deliver time for their shaft rockers and it’s 4 to 6 weeks. All bs permitting. I believe my heads to be the version 2 of the afr 315’s. Mine are the promaxx 317’s. Just no real confirmation if that’s accurate or not and hate to order and receive and not line up.

What spring pressure are you planning to run ?

Gotta ck for sure but probably around 225 550.

SR 255/259-704
Cam cards are down state. I recall jones cams not needing that much with his lobes but I question it and gonna leave up to jim.

I take it, it's a hydraulic roller ?

SR. Solid roller. After spending some time on the phone with Harland Sharp I just ordered two sets of their rockers. They worked with an outside company a few years back to come up more precise fitment on different aftermarket heads.

I have Harland Sharps on my 38 Cat and they are 21 years running without any need of a rebuild. Run them on my 302 high RPM ford engine as well. Love them!

Oh big Plus, they are made/assembled in the great state of Ohio, USA. "America First" let's go Brandon

100 hours and throw them in the garbage can

Good To know. I’m assuming you have direct experience with. A cheap insurance. They must have gone down hill since the last couple sets I’ve purchased!

tk u!

My bad! I misread. Regardless good to know. All info is good!