What do I need to do to make a former 6 speed lt1 motor work in a 700r4 3rd gen?

 

it's still a regular sbc form outside so it would bolt up to 700r4

 

Only the '93 LT1's had the TH700R-4/4L60 transmission, so only the '93 throttle body has the TV cable mount.

'94-up had the 4L60E, controlled by the PCM rather than by a throttle valve.

 

I think you're going to need a VSS input to your LT1 PCM too. Apparently the PCM uses the VSS input in part of the fuel load calculations...

 

have a 700r4 in my 95. piece of cake. just use a speedo reluctor wheel and sensor from a 93 Fcar (relativly cheap from dealership), use the tbody accelerator cable bracket from a 93 fbody, 93 fbody or aftermarket throttlebody, and to keep it simple, just use a manual torque conv. lockup switch. I dont like those vacuum switch kits out there, very annoying when driving down the highway having that thing switch on and off constantly. I only used my lockup when racing, and on the freeway. jsut dont forget to turn it OFF. when you have the pcm tuned, have them use an auto tune format, but delete all functions/codes related to the auto. it needs to be auto cause of the amount of teeth on the speedo reluctor wheel compared to just using a manual trans tune. nothing else to it unless you have, and want to keep, a cable driven speedo. then you'll have to get one of those elct. conversion box's that will have a cable output to drive your speedo.

chris

 

I have been thinking of keeping the 700r4 and use it just to get the thing out of the shop and into the car. But I hve herd that the 4l60e is a way better choice. And that the 700r4 is a PITA to make it work good and the stuff you need it to work with the LT1.