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8.5" 10 bolt spline count
What year did the 8.5" 10 bolt switch from 28 spline axles to 30 spline? I know it was sometime in the 80's, but no idea what year. I need to know what my '85 came with.....it's about time for a locker. 
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'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread
'98 Camaro z28: 370ci twin turbo 370ci build
'01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD
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11-16-2007, 04:03 PM
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