[AT] Dumb tractor hauler truck question

[charlie hill]

Thanks for everyone's input.  Doug I don't think you are right with regards 
to my truck.  I don't doubt what you are saying with regards to later years 
but not for the 89.  Here's why I believe that.

When I replaced the transmission I put one out of a Z 28 Camaro in it.   We 
changed the tail shaft and the speedometer sending unit over to the one that 
came with the truck and it all worked fine.  It seems to me that if I get 
the speedometer sending unit from a truck that had the 3:42 gear in it to 
begin with all should be fine again.  Maybe not?  Anyway I'll do as Walt 
suggests and talk to the  local transmission guru.

Charlie
----- Original Message ----- 
From: "Doug Tallman" <dtallman at accnorwalk.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Friday, October 08, 2004 12:45 AM
Subject: Re: [AT] Dumb tractor hauler truck question


>  NOW I need to get the speedometer to read accurately.   I
>>know how to do that.  I just need to replace the sending unit with the
>>corect one.  My question is where to buy the sending unit.
>
> Charlie, it isn't that simple. I think I read in one post that it was an
> 89?? The calibration for the speedo is in the dash. There is a diode group
> that goes in the back of the dash and then you blow certain ones for the
> correct calibration. Probably better to let someone that is familiar with
> doing this handle it. You can get the programming clip at the dealer.
>
>
>
>           Doug Tallman
>           dtallman at accnorwalk.com
>           VGTCOA Ohio Regional Director
>               Greenwich, OH USA
>
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