Alright my 5.3 pullout will be here in a couple of weeks for my swap into my 86 ta and I've been kinda wondring what kinda times I can pull off with it and the missmatched setup. I will prob not take it to the track untill next spring posibly the fall depending on how fast I get it together. 5.3 ls1 intake ported tb 99 fbody manifolds 2 1/2 y into 3.5i pipe and cutout and 3in over the axle to a single 14in magnaflow with one tail. Th350 trans 3500 9.5in stall ls1 ds and 2.73 open diff (for now) I plan on a 228r cam swap and t56 or built 4l60 along with gear upgrade eventualy. Well give my your guesses.

 

9.20 if you can make it hook decently with the peg legger.... but most likely will be more like 9.40's or 9.50's.