[Hemet8]

Anybody know where you can get a standalone for the 4T60E that will do speedodmeter correction, gear ratio, shift timing, shift firmness, tcc lock-up etc, etc. Thanks for the help.

[SappySE107]

GM sells one...but last I knew it was pretty damn expensive.

[v6h.o.]

You can buy aftermarket Transmission controllers. A friend of mine has one for his Supercharged Lexus SC400. I think the thing cost him 2500$ canadian funds.
(he's also using an FJO engine managment unit. for the engine)

Trying to remember the name. It does GM/Ford/ect ect transmissions.

[Azrael]

http://www.powertraincontrolsolutions.com
Their system is $700 before options though. For speedo calibration you can get the Granatelli Granspeedo. http://www.granatellimotorsports.com/granspeedo.htm