TCC lockup - which scheme would give better performance?

[Greg Hermann]

>Roger Heflin wrote:
>
>> > >I am not worried about the torque multiplication.  I am just happy if
>> > >the torque convertor is slipping enough to put me at a higher torque
>> > >position on the engine.
>
>Not ever having run a lockup (except in mama's cars), My advice may be
>questionable. IMHO, there are a couple of tenths to be had with race style, non
>lockup converters  ... they can be tuned also. I had a 2400 lb, 482 BBC
>sand racer
>w/ T350 and several converters. I had plenty of torque but it wouldn't MPH
>on the
>big end. (4.3 sec @85 MPH in 300 feet!!!) Going to a custom converter solved my
>problems. They can tune torque multiplication, stall, flash stall, and
>lockup %.
>(stators, fin clearances and fin angles). I have a Fairbanks 10" rebuilt
>by TCI. I
>asked for normal to minimal multiplication (I had too much torque) and as much
>lockup as possible over 5000 rpm and efficiency. I didn't care about stall
>speeds
>as most big motors can easily get a 10" converter over 2500 rpm.
>
>It is now in my Cobra and gets 25+ mpg at 75 mph and stalls > 2500 with a small
>block and runs 11 flat @ 125, shifting at 5900. The converter is not for
>sale. Go
>figure.  Tom

Funny how things done right by people who know how, and who are given
enough info to work from tend to work right, ain't it Tom??

Regards, Greg