Spring pressure on Veney heads

540 KB stage 7, older Veney heads, Littlefield hh blower 38% over Pro Mod Drag Boat 8000 rpm at the finish. These heads have the non roller tips, a friend of mine was told 250lbs of spring pressure, that seems on the low side, any information would be appreciated. Thanks

 

veney valve springs

You can go a long way with the exhaust springs, intake a little more
danger but 250 sounds way to low for me.
@ that rpm i would take the intake springs out at 350 and put them on the exhaust till 300. that is a safe setup. why take the risk to hit a valve ?

 

340 to 350 used to be the norm now guys are running a lot more. on a basic deal 340 is good i higher you go i think the harder it is on the valves just my 2 cents