383 with Eddy heads!

Build it similar to a hot 340 and it'll haul ***. That's all it is. A big bore 340.

That is a great analogy! I wouldn't go any tighter than a 3,500 rpm stall. I have a 9.5" Dynamic behind my very mild 383, it will flash to 4,500 at launch, but is plenty driveable. There is no soggy, boggy launch with that converter. It's a bit much with my tiny cam, but would be great with what you are looking at.