im going to be doing a v-6 - v-8 swap and all i can find for info is that in 1988 the 2.8 was mated to the 700r4.
so by all data i can find the 350 i have should mate easily correct guys?
the 350 is an 85' 4bm block.

 

No, the bellhousing bolt pattern is different on the V6 and V8 700R4s.

 

so swap out the bell housing?
or is shaft a different size as well?

 

The bellhousing on a 700R4 isn't removable.

 

UGH,
not what i wanted to hear... but at least now ill start looking for a 700r4 from a v-8.
thx.

 

Best of luck with the swap. I am looking for a Gen 3 Camaro, and have been leary of RSs. I figured the v6 to V8 swap may be a little more than I am looking to strap onto. I have a mildly worked 350 from a 70 Camaro that I wanted to stick into the 80's-early 90's body style. However, I figured if I find an original 305/350 car, I can just bolt everything from the original motor onto my block.

BTW, do you know if all IROC's came with the 700R4?

 

All IROCs with automatic transmissions have 700R4s.