This is one of the best ideas I've seen lately, and it saves them a ton of
$$$ also. Since the stator ring is behind the ring gear in the
differential, it measures axle speed, so changing gears has positively no
effect. Only changing the rolling radius of the tires does ...
I've done 2 of these recently ... went from 3.55's to 3.91's ... and it was
a piece of cake ! no hassle ... enjoy your new gears !
--Ed
----- Original Message -----
From: "Barret, Matt" <MATT_BARRET@earthtech.com>
To: <dakota-truck@buffnet.net>
Sent: Monday, July 10, 2000 4:13 PM
Subject: DML: RE: Re: RE: Re: RE: RE: 2 Questions RE:Ed
> Ed, So what you're saying is the gear change will not effect the speedo
> because the stator ring is located in the rear end and it only "reports"
> exactly whats happening, no matter what gear you have. And, changing tire
> heights will effect the speedo because it is an independent variable.
>
> Thanks for that clarification!
>
> Matt
>
>
> -----Original Message-----
>
>
> From: Ed [mailto:ed@ithink.com]
> Sent: Monday, July 10, 2000 3:50 PM
> To: dakota-truck@buffnet.net
> Subject: DML: Re: RE: Re: RE: RE: 2 Questions RE:Steven
>
>
> Hi,
>
> On the 99 trucks the speedo gets it's pulses via the stator ring behind
> the ring gear in the rear end. The rear wheel ABS computer reads this and
> feeds a data stream to the PCM which then drives the dash. You *CAN* make
> any rear end gear changes you want WITHOUT having any effect on the speedo
!
> If you make tire changes that effect the rolling radius of the tire then
you
> have to change the number of rev's per mile number in the RWABS computer
...
> The dealer can change this via the OBDII port under the dash. Some
dealers
> are more able to handle this than others that will still tell you that you
> have to change the speedo drive gears in the transmission [of which there
> aren't any ] ... There is a very good description of this in the chassis
> manual ...
>
> --Ed
>
> ----- Original Message -----
> From: "Barret, Matt" <MATT_BARRET@earthtech.com>
> To: <dakota-truck@buffnet.net>
> Sent: Monday, July 10, 2000 3:10 PM
> Subject: DML: RE: Re: RE: RE: 2 Questions RE:Steven
>
>
> > Oh yea, I knew the 4.10's were available, but for example my brother has
a
> > '99 Ram, he put 34"'s on it and took it to the dealer to get it
> > recalibrated. Dealer told him they only had software for "factory size"
> > tires. So they programmed it for the largest OEM tire to get the speedo
> > close. I was just wondering if anyone out there has changed a gear in a
> > '98/'99 truck and had the speedo calibrated?
> >
> > If they could guarantee me they could calibrate my speedo, I'd like to
> have
> > 4.10's myself. It'd put me right around 5000 rpms going through the
> traps!!
> > :)
> >
> > Matt
> >
> >
> > -----Original Message-----
> > From: Bernd D. Ratsch [mailto:bernd@texas.net]
> > Sent: Monday, July 10, 2000 2:38 PM
> > To: dakota-truck@buffnet.net
> > Subject: DML: Re: RE: RE: 2 Questions RE:Steven
> >
> >
> > Laugh it up...I've got them already for over a year in my 5-Speed (with
> 32"
> > BFG's) and so does my buddy with his 5.2L Sport (with 245/60's). It
all
> > depends on what you want. If it's a '97 or older, it's a simple
> speedo-gear
> > change. If it's a '98, no problems with the speedo gear since there
isn't
> > one. (Might require a flash update from the dealer for the new gear
ratio
> > though.)
> >
> > - Bernd
> >
> > ----- Original Message -----
> > From: "Barret, Matt" <MATT_BARRET@earthtech.com>
> > Subject: DML: RE: RE: 2 Questions RE:Steven
> >
> >
> > > Steven, You've got 4.10's going in???? Bwahhaahaa! I can't imagine
> > 4:10's
> > > in a 5spd, 1st gear would last about 20 feet or so. hee heee!! I
guess
> > the
> > > Auto won't be so bad. What are you going to do about your speedo???
> Have
> > > you checked to see if they can calibrate a 4.10???
> > >
> > > matt
> > >
> >
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:52:35 EDT