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Old 10-15-2009, 03:41 PM
77TA406 77TA406 is offline
Chief Ponti-yacker
 
Join Date: Apr 2004
Location: Spruce Grove, Alberta Canada
Posts: 546
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Quote:
Originally Posted by smittyseng View Post
Here is what I recently did on my 74 t/a 8.5" 10 bolt. My stock axles were junk.outer bearings had cut into the bearing surface (before I bought the car). I bought new 12 bolt 30 sline axles for the same price as the 10 bolt 28 spline axles would have been,new outer bearings and a new 30 spline 8.5" posi w/400 lb springs and composite clutches. I also regeared the car at the same time but if your gears are good and the ratio you want it isn't neccesary. The axles were only about 200$ and did not have the weak looking factory taper either,seriously beefy compared to stock 28 splines although I have seen very few 8.5" rear ends actually break axle shafts,Smitty
I like your way of thinking. So the 12 bolt 30 spline axles are a proper fit into the 8.5 inch 30 spline posi unit? Would the axle length change due to the new posi unit or would they still be 30 1/8 long?