[Gmecm] speed sensor and trans question for carb to TBI swap

[Darryl M Gilbert]

Hello: Was reading your post. I think the unit on the driver fender well
you speak of is the cruise transducer, this is purely a mechanical cruise
control device that runs a vacuum motor on the throttle. The speed sensor
is optical on the spedo head. If your spedo head does not have a
revolving reflective shutter wheel and a place to mount the opto device
you could probably pick up a later spedo head that would fit and have the
optics in it. Pick up the buffer also, just a little plastic box just
hanging on the cable. Opto device held in by one small screw on the spedo
head.
good luck
Darryl..
On Sun, 12 Feb 2006 20:36:52 -0500 "Jason M."
<galaxiecustom500 at sbcglobal.net> writes:
> Just a note, from my understanding 82 was a "bastard" year for speed
> sensors/cruise control.  The speed sensor, at least for cruise is 
> mounted in
> the engine bay.  One cable runs from the transmission to the sensor 
> unit,
> then a second from there to the speedometer.
> 
> I've only delt with this system on my 1982 caprice that was a 
> diesel.
> Mostly it was just as I took the parts off the car because the 
> sensor siezed
> up and snapped the 1st cable.  I put on a later one piece cable.
> 
> Have heard the 1982 F-body worked the same way, would naturally 
> assume
> trucks/everything else was like that.
> 
> I could be wrong about this, and that sensor unit might work the 
> same was as
> the speedometer mounted unit on later cars.
> ----- Original Message ----- 
> From: "Ne14RoxCJ" <ne14roxcj at comcast.net>
> To: <gmecm at diy-efi.org>
> Sent: Sunday, February 12, 2006 7:59 PM
> Subject: RE: [Gmecm] speed sensor and trans question for carb to TBI 
> swap
> 
> 
> > The speed sensor is an optical sensor mounted in the back of the
> > speedometer. It is attached to a blue/green buffer box (about 
> 2"x3" with 3
> > wires about 8" from the speedometer) which then sends the signal 
> to the
> > ECM
> > and the cruise control module. If your '82 has cruise control, 
> this should
> > all be there already. There is a place on the buffer box to plug 
> in the
> > wire
> > from the ECM. If you find that you don't have any of this in your 
> truck,
> > look for one at the salvage yard. I am almost positive that your
> > speedometer
> > will have the hole for the sensor to mount in even if it doesn't 
> have the
> > sensor. I just packed one away last night as I am in the process 
> of
> > moving.
> > I could possibly dig it out and get a part number if you need it, 
> but I
> > think the salvage yard would be the best place to look.
> >
> >
> >
> > Beau
> >
> >
> 
> >  _____
> >
> > From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] 
> On
> > Behalf
> > Of Steve Ravet
> > Sent: Sunday, February 12, 2006 3:47 PM
> > To: gmecm at diy-efi.org
> > Subject: RE: [Gmecm] speed sensor and trans question for carb to 
> TBI swap
> >
> >
> >
> >
> >
> >
> >
> >
> >  _____
> >
> >
> > From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] 
> On
> > Behalf
> > Of Cory Frey
> > Sent: Sunday, February 12, 2006 1:29 PM
> > To: gmecm at diy-efi.org
> > Subject: [Gmecm] speed sensor and trans question for carb to TBI 
> swap
> >
> > Hello all I have tried searching through the archives for this 
> question
> > but
> > I have not had any luck .  I am converting an 82 c10 truck with a 
> 350 SB
> > and
> > a 350 turbo hydromatic trans (non lock) over to a TBI setup. I am 
> still in
> > the "gathering all the components stage" to do this. I have got 
> just about
> > all of what I need except for a speed sensor
> >
> >
> >
> >
> >
> > There are inline speed sensors that you can use that will allow 
> your cable
> > driven speedo to still work.  You should be able to find what you 
> need at
> > www.jagsthatrun.com, they have a variety of VSS sensors.
> >
> > I have not been able to find much info on a speed sensor to add to 
> my
> > setup.
> > Do most people leave these out on their conversions?
> >
> > Also since my trans is the non lock up flavor. How do I shut that 
> feature
> > off in the ECM? I have the CATS RT tuner software and the 
> Romulator II. Is
> > it just a matter of turning the error code switch off?
> >
> > (1227747 ECM)
> >
> >
> >
> > There's no error code with TCC, just leave that wire 
> disconnected.
> > There's
> > no feedback that allows the computer to tell if the TCC is 
> functioning or
> > even connected.
> >
> >
> >
> > --steve
> >
> >
> >
> > -- IMPORTANT NOTICE: The contents of this email and any 
> attachments are
> > confidential and may also be privileged. If you are not the 
> intended
> > recipient, please notify the sender immediately and do not 
> disclose the
> > contents to any other person, use it for any purpose, or store or 
> copy the
> > information in any medium.  Thank you.
> >
> >
> 
> 
>
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