6.0ltrS10

iTrader: (2)

We are switching to a 350 Turbo with transbrake. Does the PCM need to see the speed sensor input? or can i just wire tie all the 4l60e wiring up and out of the way and have the trans functions removed from the PCM.

Thanks

dtsti

iTrader: (6)

I dont believe it needs to be hooked up. I pulled out my th350 out of my car and there were no wires hooked up to it.

MontecarloDrag

iTrader: (3)

It will work good with no other changes than disablig DTC's
However, there are better ways to do it, like a segment swap and installing a Vss

6.0ltrS10

iTrader: (2)

Are you taking DTC's for the transmission? What do you mean segment swap? If I put a vss in does it need to be the 40 pulse/rev?

MontecarloDrag

iTrader: (3)

Yes, if the 4L60E harness is unplugged the PCM will give several transmission DTC's. You only need to disable them and it will work good. I did it with a few cars and no problems after 3 years of daily driving.

With a segment swap you convert an automatic tune to a manual one.
The Vss signal is to let the PCM know the car is moving so it uses the correct timing tables, it doesn't need to be acurate.

6.0ltrS10

iTrader: (2)

That makes sense now.

Thanks

LS1MCSS

iTrader: (18)

Some people that have done swaps have had trouble with the engine dying, when coming to a stop, without a VSS. Some people have had good luck without one. It seems to be hit and miss as to whether or not the engine will try to die when you come to a stop. If it tries to die, just get an aftermarket vss that will screw onto the th350 tranny. Several different companies have them.

minytrker

iTrader: (13)

I have done a tone of th350, th400, and glide swaps over the years. Its better to flash the pcm over to a 6 speed, I have had some have torque management issues when I left the 4l60e tune there and some work fine. On my own car I have had several motors and went from 4l60e, th400 to a glide and left the 4l60e tune in there and never had problems until my last motor and the glide. I just swapped the current tune over to a 6 speed and the torque management issues went away.