904 Converter? Stock stall with 350lbft torque?

Nice looking Demon you've got. On the converter, I would, like RRR guess somewhere in that 2200+ range.
On that note, why trust something built 30+ years ago. It was probably built by the converter division of Man Mac transmissions who are no longer around.
You've invested a lot of time and money into the engine, so don't cheap out on the converter.
Call Paul at T.C.S., 604-533-8675, give him all the specs you've got, tell him what your plans for the car are and he'll get you the right converter.

Great advice.

Quick story on that. I have a regular customer whose a Chevy guy. He's a good dude, but this guy is the corner cuttinest **** you'll ever meet. He was askin me about converters. I told him if it was me, I would call a major converter maker and get a custom one made, because the converter was the number 1 thing in an auto car to get right.

He says "I ain't buildin a race car, I found one at Summit for 150 dollars". I said, Ok, that's good then!

LOL