Check the video, it runs correctly for a vehicle.

It was military surplus from a tank or armored personnel carrier sort of thing. After that best I can tell and from others that know the engine it was swapped into an L model ford truck, and then obviously removed.

Grigg

•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
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-