700r4 opinions?

[frankenstein]

well its just going to be primarly a daily driver, the 700r4 is from an 83 k5 blazer, im not putting any sort of shift kit in it, just a different shift servo and prolly a tq converter switch, and im prolly not going to do much serious off road stuff, but overdrive would be nice and maybe salvage some gasmilage, but also ive killed 3th 400's and im begining to loose faith......