LS7 valve springs work in a big block

Bought LS7 beehive springs. $45 for springs locks and retainers including shipping. Will have to see how locks fit my valves as the LS valve stem is slightly smaller. The only place I might have a problem is the LS spring is .030 smaller at the base but you can slide mine around so I believe there is room. If not I will machine it. I can install them at stock height and should have more seat pressure that stock and are good to 600 lift. Don't need that much just really do not trust 40 year old valve springs. By using standard LS springs you would have to shim .050 to get correct height and loose lift limit.