Switching to a 350 turbo
#1
Teching In
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Switching to a 350 turbo
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.
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Thanks
#5
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.
#7
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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.
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#8
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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.