55.2-59 Coilovers

[svr]

Getting ready to order some coilovers for the front of my truck with home made C4 suspension. Reading different flatout builds it looks like most are using 450# springs. I am assuming most are small block or ls versions. Small blocks look to be about 575#, ls’s are lighter, my 235 is heavier, advertised at 630#, 50-60# over a small block and 50# lighter than a big block. Sounds like big block guys are using 500# springs. Anybody with experience have any thoughts on spring rates? Any help much appreciated, thanks