That s why I was wondering about the 200-4R in the Camaro. It's a non-lockup unit with overdrive and a 3.08 axle ratio. When running in OD the converter could be in "slip mode" which would build heat pretty fast. It may be ok depending on converter design. According to Hughes, they can make me a non lock up converter for my TH 350 that would have a little more stall speed but feel "tighter" on the freeway when up to speed. I have not done this as of yet because I haven't decided on what trans I am going to end up with. Trust me I am the last person who would claim to be any kind of trans expert. Jay