Author Topic: Speedo gear help  (Read 847 times)

Offline Daves74chally

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Speedo gear help
« on: June 24, 2009 - 05:05:06 PM »
Just got my BFG radial t/a's today, and they are much taller than my last set. I just need help figuring out what gear i need. I have a 727tf, tires are 275 60 15 and i have 3.23 gears. And where would be the best place to get these guys from. Thanks
1974 Dodge Challenger 414 stroker, 727 trans, 8 3/4 posi [OO/`````\OO]

Buffalo, NY




Offline dutch

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Re: Speedo gear help
« Reply #1 on: June 24, 2009 - 05:41:10 PM »
this might help a little  :thumbsup:

http://vexer.com/68rt/speed.html
*** Bart ***

Offline Changin Gears

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The goal never changes - Stop the 60' timer with your back tires

Offline Bullitt-

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Re: Speedo gear help
« Reply #3 on: June 24, 2009 - 08:21:30 PM »
This link has Excel spreadsheats to input your known data  will tell you # teeth needed
http://www.moparts.org/Tech/tech/pages/speedo.html
Wade  73 Rallye 340..'77 Millennium Falcon...13 R/T Classic   Huntsville, AL
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Offline vinb

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Re: Speedo gear help
« Reply #4 on: June 24, 2009 - 08:31:58 PM »
275/60/15 tire 89" round 28" high on a 8" wheel..
31 teeth  (green)  with a 3.23
33 teeth  (yellow) with a 3.55
34 teeth  (green)  with a 3.55

Offline bb71challenger

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Re: Speedo gear help
« Reply #5 on: June 24, 2009 - 08:38:44 PM »
1971 Challenger (OO==== ====OO) getting close!
1970 Challenger (OO########OO) long ways off
*Brett*