All 69 GTO/GP cars that were optioned with A/C the highest gear Pontiac put in them was 3.23 . This was irregardless of engine 400/428 in the GP. The standard GTO 400 and RA III cars were same too, but on the RAIV GTO they got 3.90 gears were standard .
If the car was not A/C and non optioned for rear gear than standard were 3.55 ratio open.
And could be optioned with 3.23 open or 2.92 open etc.
The Safe-T-Trac could be added to all ratios from 2.92, 3.23,3.55 rear ends.
But even if the Axle performance option( 3.90 gear) was ordered then it still shows the
Safe-T-Trac option on PHS.
Mike is correct the 3.08 is very common 70-72.
I would as blu bomber says look on axle for some codes of try rolling rear wheels to determine.
Ben : Do you have your PHS ?
Dave
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