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#21
04-29-2015, 05:27 PM
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After re looking at the pics, I think its a 10 bolt, and its a 2.73 posi. That rear has lived in there a long time, it even has coil overs, stock 4 leafs too. It may have had a gear change, or the previous owner told him it was a 3.73. But I really doubt its been out.
This came came std with a 2.73 ( non ac) in 73. IMHO
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
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#22
04-29-2015, 06:39 PM
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The 3:08 to 1 rear gears were the std. gear for the 73 T/A. not the 2:73 to 1 as mentioned.
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#23
04-29-2015, 06:51 PM
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Quote:
Safety track was optional too
__________________
"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
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#24
04-29-2015, 08:27 PM
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If partial VIN is correct, it's a 400 engined Formula with auto (visually speaking) and would have a 3.08:1 rear as standard. And, it's a 10 bolt (again, visually speaking).
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#25
04-29-2015, 08:50 PM
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73 had two options depending upon options 3,08 and a 3,42
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#26
04-29-2015, 10:40 PM
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Guess my brain was in 350 mode.. that got a 273 as std with a th350.. Thanks for the chart HFR, Sorry REX!!
__________________
"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
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#27
04-29-2015, 10:57 PM
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Yes the poor Sprit's got highway geared..........
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72 Bird |
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#28
04-29-2015, 11:03 PM
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Quote:
 << that where my mind was LOL
__________________
"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
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#29
04-29-2015, 11:20 PM
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Quote:
in your avatar..................
__________________
 Current Pontiacs -1973 Formula SD455 - #'s auto orig paint 1972 Trans Am - 4 speed orig paint 1974 Formula 400 - Ram Air automatic 1966 2+2 convertible - 421 4bbl automatic 1967 Grand Prix - 4 speed orig paint 1967 GTO - 4 speed orig paint 35k orig miles |
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#30
04-29-2015, 11:24 PM
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Quote:
__________________
72 Bird |
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#31
04-29-2015, 11:29 PM
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Quote:
__________________
Current Pontiacs -1973 Formula SD455 - #'s auto orig paint 1972 Trans Am - 4 speed orig paint 1974 Formula 400 - Ram Air automatic 1966 2+2 convertible - 421 4bbl automatic 1967 Grand Prix - 4 speed orig paint 1967 GTO - 4 speed orig paint 35k orig miles |
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#32
04-29-2015, 11:41 PM
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Quote:
__________________
"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
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