cumminsN14

Doing an LT1 with 4L60E swap and have a cable speedo, how do you get the speedo to work?

Thanks

Ramair21

iTrader: (3)

You will need to replace the tail housing of the tranny from a electric output sensor to a mechanical output shaft.

cumminsN14

Thanks, i pulled the housing of my 700R4 to put on the 4L60E, the 4L60E has a metal straight gear that the sensor reads off of i guess while the 700R4 has a plastic gear that the gears go on an angle, do those need swapped too?

cumminsN14

Got a gear puller and swapped the gears, shes ready to be dropped in now... Thanks for the help!

novaderrik

the ecm needs that VSS signal to make the trans shift properly, tell it when to lock up the toque converter, and trim the timing and air/fuel mixture for better fuel economy... you can get a box from somewhere that takes the vss signal or the speedo output from the ecm and drives a mechanical speedometer...

cumminsN14

Thanks, i wish i realized that before i swapped everything because now i created a lot more work for myself since the engine and trans are in the car... Oh well live and learn.

Ozz1967

iTrader: (4)

You would need something like this to make it work with your particular LT1 4L60E:

Reluctor ring adapter

Ozz1967

iTrader: (4)

They also have a housing that connects to the VSS for the trans shift points.

Ozz1967

iTrader: (4)

Company called Shift Works also has a good set up.

93-97 4l60e tailshaft housing

five7kid

iTrader: (14)

Holy 4-year-old thread, Batman!

Ozz1967

iTrader: (4)

haha yeah, but still relevant. they also didn't have an answer. I can't stand threads with no closure haha

Ozz1967

iTrader: (4)

I"m also in the middle of doing this right now. I think I have it figuredout and I'll post pictures/thoughts once i get it sorted.