Spring rate for front afco coil over

MJmalibu

Daily Driver
Oct 16, 2011
47
0
6
Im looking at 3840bnc afcos. I have been doing some research and guys seem to be running 400-450# springs with bbc, which rate would I be good with? I have 850hp 540bbc 5400conv/w brake 4 link rear with 33-16 slicks. would I run a 8" 2.625 dia spring like afco recommends or a 10"? I have stock control arms so i am expecting to do some mods to make it work.
 

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