I also was thinking you can't use a JW bell with Ati case for the reasons mentioned. They mount the bells in different ways.

Look at Reid Racing (Dedenbear), they now offer their case and SB Mopar bellhousing #BH060.

http://www.reidracing.biz/TMcase.php

Mike Gray

If your just wanting to attached a JW Ultra bell to a stock case, you can do it with brake lathe like above but we've done a ton of them with a Sawzall, it's not pretty but all your doing it cutting the stock bell out of the way so the ultra can mount to the pump bolts so you just cut it at a little bit of an angle. (the pump is mounted to a machined surface inside the tranny and the ultra bell mounts to the outside pump surface so don't need to be precise)

I know of 100s of them done that way, yea it's crude but it works just fine.

I run a JW Ultra case and Ultra bell now but ran stock cases for year without any trouble.

I have never heard that the stock GM pump couldn't be used with the JW ultra bell. Is that like the input shaft has to be lined up with the hole in the bushing?

I didn't see where that was said.

Loaded mine up in my buddies Bridgeport mill...worked real nice...still have the glide...sitting in the corner of the shop collecting dust...pm me...please...hint hint...lol

Sorry to dig up an old thread, but this is the only one I see relating to this. I want to install one on a 727 behind a small block, I gether from the above that I can just hack the stock bellhousing off and bolt it on, doesn't have to be beautiful. Is that correct? I see them for as low as about $335, sound about right?