Just a word of advice,Crane says in their tech guide not to run more than 320psi open pressure on any flat tappet cam or it will wipe them out.I chose a set of their 96872-16s for my 351w,about 320 @ .600 lift.I think these will be excelent,130 closed & they have a damper which means if you ever break one the valve won`t drop into the combustion chamber causing catastrophic damage.
Those are some nice springs for solid flat setups. And the last part is about the only thing I really dislike about the beehives. No protection against dropped valves.
