I have put a TCI IFS under my 48 GMC truck. The springs have not started to compress yet & all the weight is on the truck. If I stand on one frame rails & jump up & down the spring still does not compress.
I can take the springs out , cut 1/2 a coil & reinstall,but maybe I should just go to 4cyl springs.
Does anyone w/a Must II IFS in there truck have any advice?

thanks Don

Don Meyer - Mech Engr(retired)
48 GMV
66 RR
64 Corvair