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Old 09-21-2021, 02:24 AM
59safaricat 59safaricat is offline
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Join Date: May 2006
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Quote:
Originally Posted by Poncho60 View Post
The dual coupling hydro is not exactly a hot rod trans, but with a 3.97 first gear and the 3.08 safety trak in my 60 performance is pretty good IMO
What exactly gives an automatic transmission "Hot Rod" appeal? If you ask most, they'll say harsh shifting. Any automatic transmission can be modified to accomplish that. Some even do that by themselves through bad designs, like the tendency of braking accumulator springs (AODE/4R70W).

BTW, the dual band was considered a "Hot Rod" transmission....and it did shift harshly, which was a common complaint that lead to the dual coupling replacement. The dual coupling shifted smooth as silk but was no less efficient. It also didn't require band adjustments since the front band was replaced with a coupling and the rear band was re-engineered and beefed up so it didn't require adjustment after it left the factory. The dual coupling also eliminated "flaring" that was common on the dual band models during gear changes from the front and rear bands engaging/disengaging.

If anyone wants to learn about the dual band hydramatics, check out these youtube clips:

https://www.youtube.com/watch?v=ygkRuwCpKxU

https://www.youtube.com/watch?v=n5feJm9E2EY&t=2s

https://www.youtube.com/watch?v=GL6s2DwqH_0&t=1s

https://www.youtube.com/watch?v=9B-yuAOpBo4

https://www.youtube.com/watch?v=CsIF07qWWGs&t=685s