what gear ratio
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Posting Guru
Joined: Mar 2010
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From: WEWAHITCHKA FL.
what
Thats what i want from yall !!!! I was told it was 275 but i never heard of this. I need to know what gear i really need. I have only drove it bout 100 miles but it ain't got much go. Not like my 67 mustang
Senior User
Joined: Oct 2007
Posts: 157
Likes: 1
From: Medicine Hat, Alberta
2.75 is nice for cruising on the highway, but not much else. With a 302, I think that a 3.5 might be a better all round gearset. Having said that, I don't know enough about the AOD trannys. Depending on the overdrive ratio, you could go to a 3.73 or even a 4.11. Find out the final drive ratio with the overdrive in, and then plug those numbers into a good gear ratio calculator which you can google to find. As well, if you are running a vacuum gauge, you can find out what rpm makes your motor the happiest and use that information as well to find your ideal rpm. Hope this helps. Good luck.
Elder User
Joined: Jan 2011
Posts: 859
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From: Newberg, OR
The AOD info I found says OD is 0.667 ratio. A 3.70 rear end would give you 2003 rpm at 70 mph.
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Posting Guru
Joined: Mar 2010
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From: WEWAHITCHKA FL.
thanks
Thanks i'll sleep on this.
I see yall or both new to FTE. Welcome aboard. Here is a pic. for yall to sleep on. LOL
I see yall or both new to FTE. Welcome aboard. Here is a pic. for yall to sleep on. LOL
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Posting Guru
Joined: Sep 2006
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From: Bristol TN.
Hey bud, Yeah I researched and searched and then I searched some more and I found 3.70 gearing would be best for my 302/aod setup for daily driving. I have 28" tall 275/60/15 tires in the back. With the 3.70 gear ratio and .67 overdrive, I've found people say that "you can have your cake and eat it too" by having good "get up and go" in town and good gas mileage on the highway.
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