thanks for the replys fellas,
the converter is a modified small block unit, it was built for 3k stall behind a 360.
It flashes to about 3600 but I dont no who built it. the tranz has iron drums and a stock sprag.
The car seems to go well, it'll spin the 275-60 ta's at any speed in 1st or 2nd.
It made 1000+lbs on the dyno but I figured thats cos of the 3.91 rear.
the dyno its self is a dynomotive and your guess is as good as mine as to what standards it calibrated to.