Quote:
Originally Posted by tubman
After seeing these last two examples, it would seem to me that running the exhaust out the top of the block would be a necessity for anyone wanting to make max HP from a flathead Ford. Does anyone know what they do with the conventional exhaust ports? Do they just run them as is, or are they plugged? Running them would give the exhaust a lot of places to go, but might mess up the flow characteristics.
BTW, the "spellchecker" on this site flags "flathead" as a potential misspelling whenever I post; has anyone else noticed this? Seems a little odd to me.
|
I don't think running the exhaust out the top is a necessity. Makes for a complicated induction system. To run exhaust out the top you're forcing it to make yet another 180 degree turn. The stock Flathead Ford exhaust ports angle down and gently away from the valve pocket area. On any side valve engine exhaust flow naturally wants to go down and away from the valve pocket area while on the other hand the intake flow travels through the port and "UP" into the combustion area. Ford had it right.