[quote]ORIGINAL: w8ye
Referring to a Ardun would mean Hemi conversion OHV heads on a flat head ford. The model engine in the video is a flat head valves in crankcase design. They simplified the task by running the exhaust out the valley (center top) area.
Here's another vid of the engine
http://www.youtube.com/watch?v=LmNiZ...eature=related
/quote]
This one is the Challanger engine, While it is not a scale model of a production engine, It is very much like the 1936 Caddy flathead V-8 which has the in the exhausts in the V.