Opinions wanted

I finished my 340 build, now I need to go through the trans. My question is will I need a stall converter.

Here are my specs:

70 dart

68 340 .040 over
Keith black hypers 9.5 compression
Big valve j heads
Rpm air gap
Comp cam: .454 lift duration @.050 218 lobe:110

245/60/14 in rear
Gears: 2.76 sure grip (wanting 3.23 eventually)

Weight: probably 3k lbs

I built the motor pretty mild as it's going to be a street cruiser only. Maybe a day at the drag strip a year. Do you guys think a stall converter is needed? I'm going to call PTC and get their advice also.

Any advice would be appreciated.

Thanks.