Making speedo work with a TH400 ?

[MexGT]

Has anyone figured out how to make the stock speedo work with a TH400 ? without disabling the ABS, help is appreciated, thanks!

 

[06gtmustang]

Ill forward you the info another member gave me a while ago.

 

[MexGT]

Anyone else?

 

[Nuclear]

Interesting combination. Does someone make a mechanical-to-electrical converter for this application? I'd like to see how this gets resolved...

 

[GB10]

You need to get the reluctor and speed sensor for a th400. It is a magnetic pickup sensor like the stock speed sensor, but has nearly 3 times as many teeth. You need to have your speedo corrected in the tune since it will read almost 3 times faster than your actual speed if you don't change it. The sensor has 2 wires just like the stock sensor and the polarity shouldn't matter. You can get the pigtail from GM, but I can't remember the part number. The sensors and pigtail came on the 454ss trucks and thelate 80s/ early 90s 3/4 and 1 ton trucks with a th400.

sensor and reluctor item #64 on the link.
http://www.transmissioncenter.net/speedometer_calibration_______va.htm#400

 

[MexGT]

Thanks guys Ill give a look into this, sucks not having a working speedo, not that I care much, but I like having all my instruments working.

 

[matt06]

looks like 120 on the link is the harness. thanks for the info.

 

[MexGT]

matt if you're looking for the parts, I came across with this kit and much cheaper.

http://shop.fticonverters.com/searchquick-submit.sc?keywords=fspk17

 

[matt06]

thanks for the link. im actually trying to sell my th400, i really wasnt worried about the speedo but its good info for a buyer. and if it doesnt sell may end up back in my car and for $150 ill hook it up.

 

[MexGT]

Nice, GL with the sale