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Old Jan 28, 2006 | 05:05 PM
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Default T-56 Drag Racing

Has anyone ever used a much higher gear like a 5.29 or 5.43 and ran their car as a 5 speed? 5.43 is like a 4.11 with the .74 OD. Would this be faster with the extra gear or would you just lose ET with the extra shift?
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Old Jan 28, 2006 | 06:59 PM
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I do not think it would be faster because the rpm drop would be to great. It would be more efficent if the 5th was like .90
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Old Jan 28, 2006 | 07:10 PM
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Default T-56

These are the gear ratios for a T-56 with a 5.43 gear, here is the formula I came up with for each gear. It includes gear ratio, mph at shift, mph difference between gear changes and rpm drop at gear change, could this work?

27" tire mph@5500 - mph diff - rpm drop at gear change

14.44 31 - 0

9.66 46 - 15 - 3700

7.06 63 - 17 - 4000

5.43 81 - 18 - 4250

4.02 110 - 29 - 4050


Last edited by christophermorales; Jan 28, 2006 at 07:29 PM.
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Old Jan 29, 2006 | 12:01 AM
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5th gear is also MUCH weaker in 1-4
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Old Jan 29, 2006 | 01:09 PM
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try it and let us know...
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Old Jan 29, 2006 | 01:15 PM
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thought about it many times, done it? nope. basically, 4-5 ends up being just one more place to miss a shift. not to mention that it's a much weaker gear. not that that would matter, it's just simpler and more effective to use 4 shifts rather than 5.

try it for yourself though, and let us know.
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Old Jan 29, 2006 | 01:49 PM
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Thanks for the replies, I might try it and see how it works worse case I'll change gears .
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