Posted by Eric B. on Tuesday, January 27, 2009 at 11:34:24 :
In Reply to: Motor ID help posted by Ephraim on Monday, January 26, 2009 at 19:56:14 :
You have all three, so that is not much help.
There are some numbers from 1957-59 cars that I have not yet figured out, but I do not think they start with DSP.
Either you misread one or more of the letters, or this stamp was made by a rebuilder or State DMV. In Montana I found engines stamped MONT and then numbers, which was a state issued ID number, and I have heard of other engine with markings from other states.
Engine builder stamps I know very little about.
Verify your number, and then starting thinking about possible meanings.
Sorry I could not be more definite, that is an odd number.
Eric