What's my conv slippage?

[bison]

I just downloaded a run off my Directscan. Here's the slippage through all of third gear with my 9", 3000ish stall, billit Art Carr non lockup converter.



MPH- RPM- SLIP
----- ----- -----

70--- 5075-- 62%
80--- 5200-- 45%
90--- 5375-- 33%
100-- 5625-- 26%
110-- 5825-- 18%
118-- 6100-- 15%


Note: I just dynoed my car last weekend. It made peak power (507 RWHP) at about 5500 RPMs. I know that I need some slip to keep the engine up in this power band. Just not sure how much? Also, I do like the streetability of this converter. My car drives like a stocker in stop and go traffic and gets over 20 mpg on the freeway. This car is 99.9% street driven. I havent had my car to the track yet with this new engine. I'm at the point where it should be in the high ten second range. Right now, it looks like I may need to shift to OD at about 1000 ft. I'm guessing that a better converter might help this. I can go back to a higher gear in the rear end, but realy like the streetability of my 3.73 gear with a 28" tall tire. All thoughts appreciated.

Mike B.

A PTC would make a huge difference here. That converter is shot. Ive never seen an AC that loose.

 

[SPOOLFOOL2]

Dusty, when I buy a converter I'll be going with you for sure.

X2