How fast ?

It should run well down in the 11’s Greg, if not the 10’s.
You have only 3.55 gears but i am guessing probably only a 26 inch tire( my little bro has a 66 Dart) so the gears probably dont hurt that much.
My 3300 pound stock stroke, bone stock shortblock 360 runs 11.20’s in good air at 118+ with a flat hood and very mildly ported eddies, car is little over 10 to 1
Yours i bet will run good bit better that that. I still dont have my convertor right.
Cant wait till you give it a shot. Good luck