What does it look like?
A two cylinder air cooled, or a flat four cylinder, or an inline 8, or a....

Or perhaps is its just a 6 cylinder? Look at pictures in the gallery and see if you see one like it.
Or post a picture for us to see.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-