According to Dave Williams engine weight chart
(fixrambler.com/art62.html) the model A engine was 475#. You likely
need to add the radiator, fan and possibly the intake and exhaust to
that. They were stink heavy due to thick wall casting and the poor
iron available at the time. Found they got 25 to 30 US MPG back
then. Where is the progress? '65 Mustang I6 rated at 30MPG also. I
think we took a step backward like drunks somewhere along the way!

Dale Davies

Yeah, but the gasoline was pure, not diluted with crapenol like
today.  Also the top speed of a model A was not high enough for aero
drag to be a factor! ... and they ran on skinny, high pressure tires.

sdorr


That is true, also lots of parts hanging out in the breeze. The compression
ratio was only about 6:1 as there was not lead  in the gas. L head engine that
had to pull the intake charge up past the valves and over the edge of the
cylinder wall to follow the piston down. Then on compression it was pushed
back into the area over the valves for combustion. Not very efficient for the
gas flow but it did help the fuel vapourize and mix with the air better which
promotes complete combustion.

Dale Davies