Bell Never Aligned

I just did this this past week. I was switching from a factory bellhousing to a scattershield. The scattershield (checked with a dial indicator on a magnetic base) was was out .050 side to side and .013 up and down. I made a set of offset dowel pins on my lathe and it was too much offset (.030). I turned the new dowel pins in the block and just couldn’t get it right. Then I decided to put the stock dowel pins back in and indicate in the original bellhousing and it was out .060 up and down but only .015 side to side. I took all that off, made another set of offset dowel pins with .015 offset and installed them and the scattershield. I got it to .003 offset side to side and .007 up and down. After putting it on and out about a dozen times I decided to leave it there and marked the new pins in case I ever removed the bellhousing again I wouldn’t waste a bunch of time trying to dial it back in again. Once done, we took the car out and it works great. Hope these numbers can help you in some way.