Roller rocker choice for HYD rollercam/for High Miles-Full life

yellow rose said
Then that’s a bad design. The PRW stainless steel rockers I run oil through the cup adjusters like I mentioned above.

Also, weight on the cam side of the system isn’t really that critical. It’s the weight on the valve side that is critical. That’s why the GM guys are busting their balls to get a .904 lifter in the blocks. A bigger lifter (which weighs more) can run a bigger roller wheel, which allows a axle and needles or bushing. @lead69 and I will be building a SBC that is getting .904 lifters.

As for geometry, the bet thing is t read the tech pages on B3’s web site. I do know just shimming the shaft isn’t the correct way to do it. If the shaft goes up it also has to move back away from the valve or you didn’t do all the work of correcting the geometry.

Those cheap assed shims that Hughes and Mancini sells are just that. I’ve seen shims like that break the rocker stands. The only good that came from that was that to save the head you had to mill the stands down and use blocks.

Hi Yellow Rose,
40yrs ago we sponsered 3 outlaw sprint cars with 350 based engines. Rules then were flat tappet
cams and NO mushroom tappets. So we bored the GM blocks on a Bridgeport mill for .904 lifters and then ramped the cams for them. The chevy mushroom lifters were .925. Tech never found them, they just looked for the mushroom. The GM guy's are just now going to to the .904 lifter for the faster lobe ramp because no one makes mushroom cam and lifters for them.
The Chy mushroom lifters were a full 1" inch in diameter, I have some of both from way back when. Look it up, that is where the old battleship Chy valve springs came from. Heavy lifters at high rpm.
If the weight of the lifter does not matter, what magic force keeps it in contact with the cam lobe other than the valve spring. The only thing I can think of is what is called a Rev Kit. Springs
on top of the lifter so you can run a lighter tension/weight valve spring for ultra high rpm engines. This is before all the newer better rocker arms. The basis for my first post, what is out there that is different/better than 15yrs ago? The only thing that trumps physics is marketing. I did'nt start engine work yesterday I stopped
14years ago. I want to know what is new and you all are using and why? What has been working for everyone. I am now building this engine for myself not others as in the past.
Thank you all
for your posts,
Rick