Stock G80 Rear Positraction
Mark Giusti - MG8T7GN@aol.com
8.5" 10 Bolt Rear

ASSEMBLED REAR

CENTER SECTION DISASSEMBLED

Features of Note:
  • Assembled G80 8.5" GM Rear
  • 3.42 gears installed
Features of Note:
  • Exploded view of G80 Rear
  • Notice clutch packs (left side of picture)
  • Spider gear (middle of picture)

TOOLS IN PLACE

MEASURING BACKLASH

Features of Note:
  • Rear disassembled
  • Pinion depth tool installed
Features of Note:
  • Dial Indicator set up for backlash measurement

POSITRACTION UNITS

TOOLS

Features of Note:
  • Stock G80 (left) and Auburn Pro Series (right)
  • Auburn unit has bolt on end cap
  • Auburn uses 5 coil springs instead of the stock "S" clip for tension on the clutches
  • Stock has replaceable clutch packs, while the Auburn is a cone style unit
  • Stock is rebuildable, but Auburn is not
  • Ring gear mounting is thicker on the Auburn for less deflection
Features of Note:
  • Tools used to set pinion depth


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