DeTomaso Mailing List: May 98, Message #181

Hi,
   Well, there must be at least two variations on the Dash-One ratios. I
just crawled under my #1549. The ZF has I.D. # 1031-001-061 (5DS-25-1) and
is the original trans. The following ratios are stamped on the ID plate:
2.42,1.47,1.09,0.96,0.705 and 2.86 R with 4.22 final. So it has the same
final ratio as the -2, but the lower gear ratios are -1's. The following is
a table of the relative ratiios with the previous gear based on Don M's
data (below) and my 061 Dash One. Looking at the -2 numbers, its hard to
understand the logic in their choice (or is the 1.41 3rd gear value a typo
or missprint)? Given this info, I might be better off keeping my old -1 and
sell my new in the box -2 as the ratios seem to make more sense.

                 2nd      3rd        4th        5th
dash 1 060 ?     165%    135%    114%    113%
my dash 1 061    165%    135%    114%    136%
dash 2           152%    104%    167%    120%

Another consideration in my decision is whine. My current trans has always
had a slight whine that is somewhat annoying when cruising. I've been told
that the -2s are quieter. Any truth to this?

Richard Barkley

To Ski or not to Ski, that is the question!

Richard Barkley
(310) 373-6695 (h), 813-2432 (w)
E-mail: richard.barkley@trw.com (work), rbarkley@earthlink.net (home)
Mammoth Condo 2BR+loft/3Bath - Horizons 4 #186 (619) 934-6758
Condo web address: http://home.earthlink.net/~rbarkley

>Hi All...
>
>Mike did a fantastic job telling the ZF story.  Here are the ratios that he
>did not have at hand OR memorized!!!! Shame
>
>BTW, these are from "deTomaso, The Man and the Machines"...
>(I cheated)!
>
>               Gear          Dash/One       Dash/Two
>
>                 1st               2.42               2.23
>                 2nd              1.47               1.47
>                 3rd               1.09*              1.41
>                 4th               0.958              0.846
>                 5th               0.846              0.705
>                 Rev              2.86                2.87
>                Final Ratio     4.22:1             4.22:1
>
>                 * some reports say 1:04
>
>  The  ZF Transaxle type  5DS-25-1 carries I.D. # 1031-001-060
>   or I.D. # 1031-001-061...   This was the unit used with the "Goose"
>   and the early "Cats", the  Dash-One
>
>  The ZF Transaxle type  5DS-25-2 carries I.D. # 1031-002-001, the
>  Dash-Two.
>
>  When changing from a Dash-One to a Dash-Two in a Pantera... the
>  bell housing must be changed.  The part # is  D16Y 63928
>
>
>  Enjoy....
>
>  Counting Down to Vegas!!!
>
>
>Don M in Miami
>'72 Euro pushbutton #1158      Dash-Two ZF (!) probably started out with
>Dash-One
>W4WJ@aol.com


Sincerely,
Richard Barkley

To Ski or not to Ski, that is the question!

Richard Barkley
(310) 373-6695 or (888) 593-6695 (home), 813-2432 (work)
E-mail: richard.barkley@trw.com (work), rbarkley@earthlink.net (home)
Mammoth Condo 2BR+loft/3Bath - Horizons 4 #186 (760) 934-6758
Condo web address: http://home.earthlink.net/~rbarkley