727 converter choice

3500-4000 no less or it will be a real pooch with that cam. Low stall 2600's come in plow trucks. Are you Plowing snow? You want the converter to lock at the rpm the cam starts working. So if the cam works from 3500 and up don't go lower.

We had a charger come in here with a 2600. He couldn't spin two factory 14 inch spares with 410's. Ran 14.98 . After installing a 3500 it ran 1350's fighting for traction on the start with 275 15 good years radials.