I'm running an off the shelf TA 2800 converter from Mancini in my 9:1 493 with that same cam and 3.23's.

It's in a 4800 lb C body. My engine is making 500 ft/lbs by 2000 so it worked OK on the street but the 1100 RPM idle was banging the crap out of the drive line when you put it in gear.

Kevin