If so, what parts have you used?

 

They is this https://www.jegs.com/i/JEGS/555/4180...BoCAyEQAvD_BwE and at one time someone was making a tail housing that could acomodate a speedo gear and cable but not seen any in a long time, Then this if you used a 700r4 tail shaft and housing with the gears then just proram TCM for number of pulses it provides per mile
Ah and found one https://www.ebay.com/itm/222629487138

Or this .
Just some ways and ideas .

 

But this amazon is for mechanical to electric speedo, i have electric sensor to mechanical speedo

 

Actually its a throught , it will allow you to set up a manaual cable and speedo but give a pulse you can use to sent to PCM just have to program PCM on how many pluses per mile.

 

The PCM (or TCU) that controls the 4L65E needs the electronic speedometer pulses or the trans will never shift. Therefore since you evidently have a mechanical speedometer, you will need both electronic and mechanical speed output from the trans. Either directly or through converter boxes. IIRC there is a electronic to mechanical converter box, but it is expensive and I wonder how long it would last.

 

hello thanks for answearing, what kind of electric speedo i have to use for my 37 chevy?

 

dakota digital makes a box to take the VSS signal and drive a mechanical speedometer. https://www.speedwaymotors.com/Dakot...ad,410403.html. I have used them a few times.

 

thanks does i need anything else? How i connect this box?

 

Click on the link
Scroll down to the installation instructions
Follow t e instructions

 

I second this idea. I've used these also. Quiet, smooth, accurate, very happy with the results.

 

Anyone tryes this on gm trans
I just found this on AliExpress: €70.54 | ELING Speedometer Sender Adapter Speed Signal Convertor Shift between GPS and Pulse with GPS Antenna 8-16VDC
https://a.aliexpress.com/_EwZAM7W

 

I presume he's trying to run an old school mechanical speedo head with a late model auto trans so I don't' think that will work for him...

 

Why would you consider this? This is to drive an electronic speedometer from a GPS signal. You keep saying you want to drive the mechanical speedometer in your '37 Chevy.
The links that @FranksCustomTrans gave you will drive a mechanical speedometer. A tail shaft with both a mechanical and electronic pickup would be best.

 

When I first built my A-body wagon I went down this rabbit hole...by the time you get everything you need to convert your tail housing to mechanical drive, you can use Dakota Digitals ECD-200BT-1 converter box cheaper...and easier.

 

I would check with Shift Works. I think they can supply a 4L60E tail shaft that has a positions for the stock tone wheel and a mechanical speedo drive.