86Camarolt1

Hey guys im about to start a new project. This will be for a daily driver. A 1996 roller block 350, carb 600 cfm,with vortec heads modified for higher lift,electric water pump, shorty headers for clearance, with a xr270 cam. Compression is 9:6:1. I want to run 87 octane without any problems. Im still debating in using a th350 or 700r4 This will be going into 86 camaro with 3:42 gears. Are any of you guys running this combo? I want to know what your mpg, driveability, power, likes and dislikes.