JoeliusZ28

iTrader: (2)

Is it possible to do a setup like this? Asking for a friend. We would like to keep the 700r4 and do an OBD1 conversion on a 93. I always thought it was, but he is saying the engine harness has a sensor for the stall converter, etc... i was never aware of that since im an M6 guy

flame

iTrader: (13)

The 93 uses a 4L60 non electronic. Still uses a tv cable and no pcm to control shifting. The trans does have an electronic speed sensor and lock up convertor. Will the 94-95 pcm control the lock up without controling the rest of the shifting I'm not sure.

JoeliusZ28

iTrader: (2)

ah so the converter lockup is electronic on a 700... i didnt know that. I know some have taken the easy way around the speed sensor issue with an aftermarket speedometer.

idformula

Just tune it for a manual transmission

2fast4u1989

why go 700r4 man? 700r4 and 4l60 are the same transmission. 4l60e is just the electirc version used 94-2002. i have a 700r4 in my 1991 trans am gta and hated it. if i was you i'd go with a turbo 350. much stronger transmission and cost alot less for a performence rebuild.

2fast4u1989

oh and 93 is already obd1. it just uses chips instead of flash memory like the 94 and up pcm

moehorsepower

iTrader: (3)

I have a 95, went with a 700R4 and just had a switch for the lock up, worked fine..

JoeliusZ28

iTrader: (2)

good info! does it cause problems if you forget to unlock it when coming to a stop?

moehorsepower

iTrader: (3)

You know its been so long ago that I had that setup and it did do something but I really don't remember, I think it like bucked when you came to a stop, I know it did do something that would remind you to flip the switch....But it worked great for me, after a while you get used to it like pushing in a clutch to change gears....

JoeliusZ28

iTrader: (2)

cool, thanks for the info!

ThreeHonks

iTrader: (10)

you can always wire it to unlock off the brake switch too

carguyshu

iTrader: (8)

gotta be careful about an SES code being tripped in the PCM & it going into limp mode. Make sure you get a piggyback chip on it so you can do things like remove the EGR, AIR & anything else that you won't want to also swap over

moehorsepower

iTrader: (3)

The 700R4 is non electronic so there is no limp mode for that...

quik95lt1

iTrader: (7)

you CAN wire up the PCM to control the TCC soleniod on the 700r4 it will work fine even with the rest of the garbage unplugged i did this on my 4L60e when i went to manual valve body......personally id say just run a switch to it ......orrrr buy my transmsission its for sale!!! lol

moehorsepower

iTrader: (3)

Yup, there are a few ways to do it, like you did and like mine, it was vacum modulated which controlled the line pressure and made it downshift on its own, but had a switch for the lock up...The other question is, are 700's stronger than their electronic counterparts? some say there are the same, others say the 700 is stronger, all I know is that the 700 I had did hold up where the previous 5 electronic ones failed, so???

carguyshu

iTrader: (8)

I meant the pcm would put the engine in limp mode, not the tranny

JoeliusZ28

iTrader: (2)

I wouldnt consider them stronger, but I think they work much better and are more reliable as a result. Obviously given the constraint that they are setup properly. Electronic management is great for a lot of things, but I fail to see the advantage for extra complexity in a performance application when you don't want any delay or shadow of a doubt of that is going to do what you tell it to do. Theres always the arguement that electronic is easier to setup which is true, but that should be a secondary priority to the end result when building a fast car imo.