I have a 85' Ford F350 Im pulling the hangers/springs off of and putting on my 67' F350... Heres what Im doing I cut the frame of the 85' off and used it as a drill template for the rear 0degree (parallel to the road) on the 67' frame and the 85' so essentially they should be the same once drilled? I put my angle finder on the leaf not the perch and its 0 degrees (with weight), is this correct or does this matter. Now of course the leaf perches on the axle can be rotated or shim added between the leaf and perch, to get the pinion at the right angle but does the leaf angle to the ground matter? Im thinking it does as it will effect the way it reacts when it hits bumps etc? So just curious on any thoughts etc? Im also thinking the front should be 0 degrees or the bottom of the leaf parallel to the road?


Thanx,
Todd

I don't think its something to worry about. It sounds like you did plenty to make sure that they are at least both at zero. You did more than most people by simply using an angle finder rather than just eyeballing it. And as long as your pinion angle didnt change to far from stock you wont get a driveshaft vibration either. You should have no problems. You are right, leaf springs with the shackle towards the rear are made to work better when going forward so when you hit a bump the axle moves slightly back as it moves up.