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Discussion Starter #1
Putting together an autocross car, (72 Nova) with an auto transmission. Rear gear suggestions??? 10 bolt 8.5.
 

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what tranny? what size rear tire? What RPM range the motor happy at?
 

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Discussion Starter #4
Dan, thanks for the imput. Looks like 4:11's or a 3:90 gear should do the trick. As far as not having a 4 speed in it...:rolleyes: had an 350 turbo laying around and said what the @#$%.
 

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Don't know too much about autocross, although I have a lot of friends who do it...

anyways, I have 3.90s in a 12 bolt with a TH350. With a 275/60 tire, driving on the highway is no fun. When I get on the highway, which I rarely do, I just watch the RPMs climb...I usually don't go over 50-55. But in terms of autocross, I really don't know.
 
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