Anyway, the heads are Trick Flow 225 High Ports. They have 2.08 valves with a 2.00" installed height. They came with Isky 9385 springs that have a 245 lb on the seat with a 500 lb/in rate. Good for around 0.720" lift. 0.550" diameter.
These are the cam specs.
Current cam specs are:
(solid roller)
279/291 @ 0.020"
249/258 @ 0.050"
172/177 @ 0.200"
0.4120"/0.4315" lobe lift
0.700"/0.690" lift with 1.7/1.6 rockers
110º Lobe Separation
0.018"/0.022" lash
The car will see plenty of street duty, so I was thinking about going to a more 'modern' set of springs that are lighter and can be used with less pressure for longevity of the valvetrain. Lifters are 0.875" Isky Red Zone with the solid bushings... yes, some were undersized, and sent back and traded.
Below is a little more info on the engine.
4.125" bore Dart Sportsman block, zero decked.
Scat 3.40" crank, internally balanced.
Olivier Rods
Mahle flat tops. 11:1
950HP Holley
Ported Super Victor
TEA 225 High Ports
1-3/4" Tubular Automotive Race Headers.
Crower Stainless Shaft Rockers
3/8" pushrods
ATI dampner
Toploader 4-speed
Car is pump gas (off the bottle) and does go to the track, where it has run a best of 6.26 @ 109 in the 1/8, and 9.87 @ 135 in the 1/4 using a 200 hp nitrous plate... with the solid flat tappet 306 that just let go of a rod bolt. 50 year old Boss 302 crank and rods... but what fails is a 3/8" ARP Waveloc rod bolt!

Anyway, input on valve springs would be appreciated. If I can safely dial down the pressure with some more modern tech, and still spin around 7500 rpm, I'm all ears!
Thanks!