1949-53 Ford Flathead Finned Aluminum Heads
These Offy flathead Ford heads are finned for high heat dissipation, bigger water capacity for “built” engines and everybody knows, nothing beats a full-dress flathead for beauty! Heads have a .400″ valve relief.
3-5/16″ bore, 4″ stroke = 9:1 compression ratio
3-5/16″ bore, 3 3/4″ stroke = 8.6:1 compression ratio.