Rat Bike Project

[willedoo]

The airflow in and out, but particularly intake air, has to take a lot of undesirable paths on a flathead V8 which restricts effeciency and performance. The trade-off is that it contributes to that unique sound they make. Cool sound at the cost of performance. Even stock standard they sound good. I think rodders mainly use them for looks and effect.

[facthunter]

The Main problem with Flathead motors is the Heat near the exhaust port cracking blocks and distorting the Cylinders causing excessive Cylinder Blow By and oil contamination. The Large combustion chamber area and volume makes them impossible to get High compression Ratios.  Nev