One wire lock-up, 4 spd automatic w overdrive into A-body.

Thanks for the effort. I was under the car and measuring where the ring gear and torque converter pads line up on my 5.9 & 727. I also carefully measured the 200R4 with new bellhousing with the new torque converter.

I determined the new converter is spaced like a stock GM converter, and is basically 5/8" too thin from front to rear. In other words, the starter ring gear and mounting pads need to be moved toward the front of the car 5/8". That will leave me with 1/4" to 3/16" freeplay, so the converter won't be binding with the trans pump when bolted up to the flex plate.

I also had to grind a small relief at the bottom of the bellhousing so the converter would drop all the way in.

The last pic is the 5.9 & 727 currently in my car.

I'm going to have to box the converter back up and send it back to Precision to get it modified. It's always something.


If you move the starter/ring gear and mounting pads forward 5/8" won't you have to put a spacer on your starter so that the starter drive gear doesn't overshoot the ring gear??

treblig