What is the usual installed height for valve springs on stock BB castings with stock length valves?

I ask because I have a set of roller springs that installed a 1.900 will coil bind at max lift, but if installed at 1.950 will be OK.

Im in the mock up stage so I havent tried them at 1.950, but wondering about retainer to rocker clearance at 1.950

Anyone?

Thanks


72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.