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You could use a auto crank, a decent machine shop could drill the end of the crank for a standard pilot bushing from say a SBC. I had one done probably 30 years ago.
If you have a good automatic crankshaft here's a diagram of how to have it cut/drilled for a pilot bearing or bushing. I used this to have a crank done several years ago and it worked perfect.
I thought there was a bearing that would fit OVER the end of the crank.
this bushing does need to have to be crank drill about a 1/2 deeper to clear or cut the trans input shaft
these are from a friend. I am planning on doing this very soon.
also if your already rebuilding the engine I can’t see them not being able to drill the crank for you
Last edited by oldstata; Jan 27, 2022 at 08:41 PM.