[Jim Sims]

Did you do an prestart crank with the ignition or fuel system disabled, build and confirm oil pressure before starting and running for the first time? What was the stop like after a minute like? Abrupt or did it appear to be running out of fuel? How long did you crank it after it stopped? Is your CIS airflow switch connected? Could be "hydro" locked with fuel if you're lucky or stopped with a seized bearing at the other extreme. Jim