i want to put a 700r4 behind a carbed ls1 i'm building for my thirdgen. i know there are people who have done the 700r4 behind the ls1 before, but i don't know what converter they're running. i have a VIG3200 at my disposal, and it's for an ls1/4l60e...will it work in the 700r4? if not, what is the solution?

 

found this:
https://ls1tech.com/forums/automatic...ter-700r4.html

i think the performabuilt guy might be able to help. his name seems to pop up on the threads about the 700r4
-ben

 

The LS1 converter will not work with the 700r4, You will need a 700r4 converter and a spacer for the crank pilot to make this work

 

and this is available...where? so i just use a traditional small block converter with the said spacer, correct?

 

You could read the th350, th400 conversion stickys at the top of the forum, the same converter/flexplate/spacer applies to a 700R4 conversion.

You can get the spacers at summit, and other places.
I say read the sticky thread because I'm not sure if all LS flexplates work.
Frank might know off the top of his head but in the mean time you might find an answer quicker.

 

heres how i did it.

flexplate pn 12551367 and spacer pn 12563532 and bolts 12563533
bellhousing bolts pn 11512767 and converter bolts pn 1261968
all chevy parts
this will bolt up skiping one hole

you must have vss signal.
get the in line adapter made by speed scene wiring PN LS61325

you will need some mounting plates to mate up with your old motor mounts which are everywhere or make your own.

thats it.

 

i ended up going with a built 4l60e and a Vig3600