B&M Converter is bad

I don't remember where your engine ended up as far as specs and power....But I do know, a 2000 stall B&M is just above stock, at best. I used a few 11" models many moons ago, and eventually learned my lesson.

P.S. There's no way that engine should have to idle anywhere near 1200 rpm's. More like 850/900 would be more in line...