[murphster]

Great mph for that boost. What cam are you running? I'm assuming its a big cam since it seemd to like the high rpm. Due to your loose converter you might be getting right up into the optimal rpm range, even at low boost.

The question is what will happen if you raise the boost up higher with the current gears? The rpms might get higher than you want. Changing the gears to 3.42 should get you into a better rpm range so you can run more boost and/or a smaller tire. The lower rpm will probably loosen the converter more though.

Switching to a 9.5" n/l PTC will lower the rpms. With a PTC you'll run slower at lower boost because the rpms will drop so low, but when you bring the boost up you can run 130+mph at only 6000rpms or so. If you need the rpms, then staying with 3.73s would be good on a PTC.

Heck, you are already in the 10s if you can 60ft. Put in some good axles and go.