Torsen differential information:

  Customer Part Num.: 12471371
  Customer: GM Service Parts Organization
  Application(s):   Chevrolet Camaro / Pontiac Firebird (F-Car Series)
  Rear Axle Ratio(s): 3.23, 3.42, 3.73, and 4.11
  Torsen Part Number:   409160-9022 (High Numeric)
  Torsen Diff. Type:   T-2
  Bias Ratio: 2.1:1
  Differential Size:   7.6" (7 5/8")
  No. of R/G Bolt Holes:   10
  No. of Splines:   28
 

Click here for a picture of dimensional schematic.

  MM / Inch
  Dimension A: 168.00 / 6.614"
  Dimension B: 117.50 / 4.626"
  Dimension C1: 41.39 / 1.629"
  Dimension C2: 41.39 / 1.629"
  Dimension D1: 30.86 / 1.215"
  Dimension D2: 30.86 / 1.215"
  Dimension E1: 20.80 / 0.819"
  Dimension E2: 20.80 / 0.819"
  Dimension F:

28.96 / 1.140"

  Dimension G: 142.75 / 5.620"
 

Dimensions are for REFERENCE only!