[DeTomaso] ZF Ratios and Specs

Asa Jay Laughton asajay at asajay.com
Wed Nov 4 19:08:34 EST 2015 

For what its worth, when I visited Dennis Quella a few years ago, he told me the same thing.  The biggest bang for the buck was the taller 5th gear; don't bother changing the ring and pinion.  But he said if I really wanted a taller R&P he'd be happy to sell me one.

If/when I ever have my ZF serviced, I'll go with the 5th gear change.

Asa  Jay


Sent using Jedi Mind Tricks

Mike Drew via DeTomaso <detomaso at poca.com> wrote:

>Michael,
>
>Although the spreadsheet on Panteraplace is very useful, it will take any value and thus give you data for gears that don't exist. GIGO. 
>
>Lloyd Butfoy's program allows you to select from the available ratios. Generally, the stock R&P is 4.22; some GT-5S era cars could be had with an optional 4.00, and 3.77 is the widely popular 'Le Mans' gear set. 
>
>A new rear end set is about $2500. Some people have gone for both the 3.77 and super-overdrive 5th gear (.642 or .620) and the combination of the two has been a failure in most cases. Fifth then becomes too tall to be realistically useable below 90-100 mph or so. 
>
>What are you hoping to achieve?  Most people would be best served with the stock 4.22 and the taller 5th, I think. 
>
>Mike
>
>Sent from my iPhone
>
>On Nov 4, 2015, at 14:35, Michael Shortt <michaelsavga at gmail.com> wrote:
>
>>   Does anybody have and will share the specs for different ratios
>>   sppeds in each gear at X rpm, etc.
>>   4:56
>>   4:22
>>   3.750
>>   3.53
>>   are there any others?
>>   Thank you,
>>   Michael
>>   --
>>   Michael L. Shortt
>>   Savannah, Georgia
>>   [1]www.michaelshortt.com
>>   [2]michael at michaelshortt.com
>>   912-232-9390
>>   A
>>   This email is protected by the Electronic Communications Privacy
>>   Act, 18 U.S.C. Sec. 2510-2521, is confidential and may be legally
>>   privileged.A  If you are not the intended recipient, you are hereby
>>   notified
>>   that any retention, dissemination, distribution or copying of this
>>   communication is strictly prohibited.A  Please reply to the sender that
>>   you
>>   have received this message in error, then delete it.A  Thank you
>> 
>> References
>> 
>>   1. http://www.michaelshortt.com/
>>   2. mailto:michael at michaelshortt.com
>> _______________________________________________
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-------------- next part --------------
   For what its worth, when I visited Dennis Quella a few years ago, he
   told me the same thing.  The biggest bang for the buck was the taller
   5th gear; don't bother changing the ring and pinion.  But he said if I
   really wanted a taller R&P he'd be happy to sell me one.
   If/when I ever have my ZF serviced, I'll go with the 5th gear change.
   Asa  Jay
   Sent using Jedi Mind Tricks

   Mike Drew via DeTomaso <detomaso at poca.com> wrote:
   Michael,
   Although the spreadsheet on Panteraplace is very useful, it will take
   any value and thus give you data for gears that don't exist. GIGO.
   Lloyd Butfoy's program allows you to select from the available ratios.
   Generally, the stock R&P is 4.22; some GT-5S era cars could be had with
   an optional 4.00, and 3.77 is the widely popular 'Le Mans' gear set.
   A new rear end set is about $2500. Some people have gone for both the
   3.77 and super-overdrive 5th gear (.642 or .620) and the combination of
   the two has been a failure in most cases. Fifth then becomes too tall
   to be realistically useable below 90-100 mph or so.
   What are you hoping to achieve?  Most people would be best served with
   the stock 4.22 and the taller 5th, I think.
   Mike
   Sent from my iPhone
   On Nov 4, 2015, at 14:35, Michael Shortt <michaelsavga at gmail.com>
   wrote:
   >   Does anybody have and will share the specs for different ratios
   >   sppeds in each gear at X rpm, etc.
   >   4:56
   >   4:22
   >   3.750
   >   3.53
   >   are there any others?
   >   Thank you,
   >   Michael
   >   --
   >   Michael L. Shortt
   >   Savannah, Georgia
   >   [1]www.michaelshortt.com
   >   [2]michael at michaelshortt.com
   >   912-232-9390
   >   A
   >   This email is protected by the Electronic Communications Privacy
   >   Act, 18 U.S.C. Sec. 2510-2521, is confidential and may be legally
   >   privileged.A  If you are not the intended recipient, you are hereby
   >   notified
   >   that any retention, dissemination, distribution or copying of this
   >   communication is strictly prohibited.A  Please reply to the sender
   that
   >   you
   >   have received this message in error, then delete it.A  Thank you
   >
   > References
   >
   >   1. http://www.michaelshortt.com/
   >   2. mailto:michael at michaelshortt.com
   > _______________________________________________
   >
   > Detomaso Forum Managed by POCA
   > Posted emails must not exceed 1.5 Megabytes
   > DeTomaso mailing list
   > DeTomaso at poca.com
   > http://poca.com/mailman/listinfo/detomaso_poca.com
   >
   > To manage your subscription (change email address, unsubscribe, etc.)
   use the links above.
   _______________________________________________
   Detomaso Forum Managed by POCA
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