Tim thanks for the response.

Along with the 3738307 indicating a 1958 - 1962 on another website.

They also discussed that the L 47 could also be that it is December 4, 1957.
Thus an early 1958 car engine.

You are right about the powerglide because the engine still has the automatic
flex plate. I did not take off the side cover to see if the engine has hydraulic
lifters. Though the rocker arms still have the lock nut and threaded screw to
adjust the valve lash.

The engine also has a 12 volt ignition coil and a 2 stage fuel pump. Meaning
vacuum boost for the wipers.

Last edited by 32vld; 12/09/2017 7:23 PM.