Rpm potential

What kind of rpm are guys turning with say a .600 lift hydraulic roller in these engines? NA vs Boosted make any difference?

I've read about people going as high as 6500-7000 stock rockers, not sure about cam profiles on them, David Barton has gone over 8k but I have no clue as to cam and rockers.
I have a kid who works for me here that has a 06 magnum, 392 inch 5.7 , 4 in bore 3.9 stroke , Eagle heads runs a RLD- H5 cam Lift is 605/.611, stock rockers ,I've personally seen hit 7200 ,now he's running a set of PRW PQX steel rockers and is turning up to 7500.
I think the crank is more of an issue then valve gear from some of the things I've read here on moparts

I deal with a shop that does a few Drag Pak engines. The original 6.1 cranks were cross drilled and that was the oiling issue. Just was wondering what was a common rpm for these engines with a hydraulic roller. Had no idea anyone besides T&D and Jesel were making rockers. Harland Sharp doesn't show them on their site. Thanks for the info.

New Jesels that don't require machining and PRW

Anyone have the pn for the Jesel Drag Pak rockers?

What's the story on PRW rockers?

Yes I would like to know that as well.

They don't look bad but they are $1169 at Jegs. Part # 3234513. Limited to 450 open pressure. I'd pay the 2k for Jesel Drag Pak or $2800 for T&D before I paid that for Chinese rockers.

Where did you find the Info about open pressure? (just curious)
When Eddie gets back from lunch I'll ask him what springs are in his magnum.

On PRW's website.

I kept getting a 404 code when I went to their site.
My magnum kid says the springs are what ever was on the Hughes heads he bought , he thinks they are 340/350 open they are a beehive spring.