Axle Code
#3
X2 on what Randy said. It doesn't matter that it was a W-30. Air conditioning overruled all else and limited the rear end ratio to 3.23:1. This is straight from the assembly manuals and new car order forms.
#4
Correct though mine and one other W30 I know of (with AC) do have 3.42s but they also have the W27s in them so who knows when those were put on or why, meaning maybe there were no 3.23 W27s left on the line or the dealer swapped it or someone else swapped it.
#5
And, of course, *if* 3.23s did come in W27s with AC, it *could* and I expect was not rare to have dealer swapped gears.
Olds was having trouble marrying the highest level of performance offerings with creature comforts like AC.
Very few W27s actually made it into production. Approx 108 went into W31s and W45s, and approx 248 made it into 442s.
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