im in the process of building a iron 408, the motor originally had two spun main bearing so i got a line hone. my machienist has moved so i can't contact him, how can i tell what bearings to order?

 

Clevite catalog

High performance bearings on .pdf page 91
Passenger car bearings on .pdf page 391

Or you could contact one of the sponsors on the right...

 

I think he's asking how he's supposed to tell what size bearings he needs. In which case you'd need to bolt the caps on and mic the journal size with no bearings. Check around for the standard specs and compare your measurements. They sell bearings accordingly depending on how much he had to take out of the hole. You can use T-Gauges with a micrometer or actually use a small bore gauge with a dial indicator.

 

Has your crank been turned?