426 hemi crate engine

IQ52 said
How can you give a max safe RPM with no pertinent information? Who's crate engine? What solid flat tappet cam? What valves and valve springs? What engine internals? No dyno sheet? Let's all just keep guessing! After all, it isn't your engine!

It's a Mopar 426 crate engine. Cast heads stainless valves 2.25 intake 1.94 exhaust . stock rockers it's a 9.1 motor Mopar dual plane intake forged crank and rods as well as pistons has a ray Barton solid lifter flat tappet cam that ray had bullet racing cams grind