SPECS ON PILOT BUSHING, CRANK PILOT HOLE ID AND INPUT SHAFT

in reading through these Forums, I found that some members had success using the pilot bearing and some members said they failed. I read one post that said when the trans was pulled, the pilot bearing flopped out. It made me wonder if it was previously just hanging on the input shaft. I was also talking to an older engine builder and he said he didn't like pilot bearings because dust may cause them to fail.

I feel like what Chrysler did originally is best. I still haven't found any documentation on what the crank pilot hole ID should be drilled to. I couldn't figure out that calculator at oilite.com. I called Oilite Tech, but they were no help.

Rick Ehrenberg wrote a comprehensive article on the matter in Mopar Action several years ago. Find that back issue or contact him directly from their website.

I'd be surprised if he didn't have that diameter handy.