Check this out, I came across this on the FastVairs email list. Jonathan McCreery has just installed an LS1 V-8 into the back of his late-model corvair. Here is what he says:
"Got the motor in last week. It's mated to a 911 turbo
tranny. The porsche tranny weighs 50Lbs less than the
corvair's the shipping weight of the motor with pallet
was 460 Lbs. With the AC , powersteering pump and
factory maniolds off of it we managed to strip 83 Lbs
off the motor.
The harness is from Howell and uses an LS1 Edit Eprom
, the intake is turned around and uses a BBK TB (can't
use drive by wire) the tranny was cryo treated and has
a 40% LSD in it with the revised longer turbo gears.
Should have it running next week
A true 370-380hp Rear engined Vair... the package
weighs just afew Lbs more than the 215 Olds it replaces."
Check out the pic: