Sixpactogo
Well-Known Member
A bit of info to start with. I installed a 6.1 and 5R45RFE transmission. Not wanting to raise the hump anymore than I did, I ended up with the engine transmission angled down about 5 degrees. I knew I would have to raise the pinion angle some to correct the driveline angle so I shimmed the pinion up 4 degrees. I still have some vibration at higher speeds and don't want to add more shims so I'm thinking I want to cut the perches and relocate them. I got a used housing and in checking the factory mounted perches, I find the left perch (driver side) is welded on at 5.8 degrees nose down and the right perch is 4.8 degrees nose down.
My question is does anyone know what the factory specs were? It seems to me they should have both been the same. I know quality control was not their number one concern but there must have been some sort of formula
My question is does anyone know what the factory specs were? It seems to me they should have both been the same. I know quality control was not their number one concern but there must have been some sort of formula