11-24-2014, 01:04 PM
ok, im still about to pull whatever hair i have left OUT. my spare shaft has a tube length of 18" and his shaft had 20". so i was able to install mine in his truck with about 1-1.5" of slip available. took it for a drive and the bucking is still there! so i dont think its the driveshaft binding. i did try 4lo and i can launch the truck! i can spin the tires, 4lo is giving me the mechanical advantage...3sp with stock gears and 32" tires might be hurting me some. so im leaning towards the flywheel again. the clutch shouldnt be the issue. its a 3 finger, but all broncos can that way.
77 built 306,Trickflow Cam/Alum Heads/dome pistons/10:1comp,nv3550,duff long arms,3.5" lift,family cage,protofab rear bumper,twin sticked, and 35KM2'sG.D.I.