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Number: 2049
From: "negusm <negusm@y...>" <negusm@y...>
Date: Thu Feb 20, 2003  10:10 am
Subject: Re: 85 Coupe Speedometer

Body:
Thanks for the info.

When I took out the Tranny and had it gone thorugh, it was dated
correctly for the car and seems to have never been rebuilt. The
tires are 225/60 which were the same size as what I got the car
with. My guess then is that the tire change is the problem.

As to the door tag...bwahahah. We don't need no stinkin tags! That
thar paper tag done left us looooong ago. :-)

-Mike



--- In ascmclaren@yahoogroups.com, "Tom S. <tkm654@c...>"
<tkm654@c...> wrote:
> My '85, 607910, had an 85 mph speedo with no evidence of having
> ever been changed. My guess is your car had a 3.08 rearend and has
> been changed to 2.73 or the tire size has gone from the 225/50
tires
> originally installed to a 225/60 which could also cause the
> difference that you noted. Different transmissions could also
> explain your difference. Just changing the speedo head would not
> make a difference in noted speed.
>
> Your door tag will identify what axle ratio was installed from the
> factory. A 2.73 Traction-Lok will have a code of "M" and a 3.08
> Traction-Lok will have a code of "Z". A tag attached to the rear
> cover of the differential will have a code of 2L73 for a 2.73 and a
> code of 3L08 for a 3.08 ratio.
>
> Tom S.
>

--- In ascmclaren@yahoogroups.com, "negusm <negusm@y...>"
> <negusm@y...> wrote:
> > The 1985 coupes were supposed to have 140MPH speedos, right?
Mine
> > has the 85MPH variety but has always been 7-8MPH off (registers
> too
> > low, I have to add 7-8mph to get the right speed).
> >
> > I'm wondering if the 85 speedo is definitely wrong, which is odd
> to
> > me since why would anyone replace a 140 with an 85 or its
> possible,
> > the 85 speedo is right, but I have the wrong rearend gears. We
> > never found a tag on the rearend to tell us what was supposed to
> be
> > in there...I have a feeling that the previous owner who raced it
a
> > little, may have switched gears (or kept the 140MPH speedo?).
> >
> > We had to replace the rearend gears because they shredded but we
> > can't remember exactly what went back in. I beleive it was the
> same
> > as that were in it since the speedo discrepency didn't change.
> >
> > Would higher or lower gears make the reading go + or -?
> >
> > I bought a Ford 140MPH speedo to go back in this car and figured
> > that I would get the speedo gears all worked out so it read right
> > but its always been an odd curiosity I have never solved.
> >
> > When I get back up there I'll talk to the previous owner and ask
> him
> > if he fiddled much with the car. He only owned it a short time
> > after buying it from Florida before he moved on to (or fell in
> love
> > with) SVOs.
> >
> > -Mike