i have had bot th350 and 700r4 in my car over the years
liked the 350's 1-2 ratio spread better than the 700r4s,
but installed the 700r4 when i got the AC working and
didn't want the compressor turning 3500+rpm on the
i think car was a little faster with the 350...
I think the 700r4 is tougher than often given credit for
(and the strength of the th350 might be exaggerated
some...also i think the 700r4 may have a stronger
bellhousing than the kinda weak looking one on the
350)i have done some very nasty things to my 700r4
over the years-some on accident-and no problems at all.
I am only running about 240-250 hp though.
last time i looked,th350 had a better selection of
torque converters avalible for it.