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Discussion Starter #1
I've been looking around the internet trying to find what RPMs an '88 AOD GT would be turning on 4.10 gears at around 70mph and I havnt had any luck. Also what it would run on 3.73s? Thanks a lot guys, im sure somebody has asked this question before, I just cant find it....
 

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Discussion Starter #4
awesome thanks for the help! :bigthumbsup
 

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Or you could ask what an AOD/3:73 runs at 70mph. Mine runs at 2400 at 70mph. With 4:10's, it'll be around 2600.
 

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Discussion Starter #6
Thanks Eagle, now im trying to decide if i should get 3.73s or the 4.10s. I do a little highway driving but i just like the idea of running a little lower RPM. Since I dont think there is a whole lot of difference between the two performance wise I think i'll go with the 3.73s
 

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The 3:73's would be better if you do a lot of highway driving. I've driven it coast to coast and it did fine.
 
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