Edelbrock Cylinder Heads 1939-48 Model Ford Flatheads w/ Block Letter Logo (Pair)

Ford Flatheads feature the original Edelbrock script logo design for Fords and Mercurys, and are casted at the Edelbrock Foundry in the USA of T-6 tempered A356 aluminum. These heads are rugged, ribbed internally and externally, with a large water capacity and excellent breathing characteristics. The 65cc heads support 8.0:1 compression ratio on blocks with a 3/16 base relief (stock bore and stroke), compression ratio increase is approximately 3/10 of a percent with each 1/8 stroke. High Lift/Large Chamber versions feature a new raised roof combustion chamber design that is CNC machined for high lift cams and is perfect for reducing compression in supercharger applications or on low octane fuel. High Lift heads have increased valve clearance and increased flow capacity. Match these heads with our popular Ford Flathead Intake Manifolds. Cylinder heads; 1939-48 Model Ford Flatheads with Block Letter Logo (pair); 61cc combustion chamber Edelbrock 4500 Flange Single Regulator Plate Kit. Ford:Flathead:221 (3.6L)/239 (3.9L);Mercury:Flathead:221 (3.6L)/239 (3.9L) Fits, Fitments 1938 Ford 1 Ton Pickup Base 1938 Ford 1/2 Ton Pickup Base 1938 Ford 3/4 Ton Pickup Base 1938 Ford Model 82 A Base 1938 Ford Sedan Delivery Base 1939 Ford 1 Ton Pickup Base 1939 Ford 1/2 Ton Pickup Base 1939 Ford 3/4 Ton Pickup Base 1939 Ford Sedan Delivery Base 1939 Ford Standard Base 1939 Mercury Series 99A Base 1940 Ford 1 Ton Pickup Base 1940 Ford 1/2 Ton Pickup Base 1940 Ford 3/4 Ton Pickup Base 1940 Ford Deluxe Base 1940 Ford Sedan Delivery Base 1940 Ford Standard Base 1940 Mercury Series O9A Base 1941 Mercury Series 19A Base 1942 Ford 1 Ton Pickup Base 1942 Ford 1/2 Ton Pickup Base 1942 Ford 3/4 Ton Pickup Base 1942 Ford Model 21 A Deluxe Base 1942 Ford Sedan Delivery Base 1942 Ford Super Deluxe Base 1942 Mercury Series 29A Base 1943 Ford 1 Ton Pickup Base 1943 Ford 1/2 Ton Pickup Base 1943 Ford 3/4 Ton Pickup Base 1944 Ford 1 Ton Pickup Base 1944 Ford 1/2 Ton Pickup Base 1944 Ford 3/4 Ton Pickup Base 1945 Ford 1 Ton Pickup Base 1945 Ford 1/2 Ton Pickup Base 1945 Ford 3/4 Ton Pickup Base 1946 Ford 1 Ton Pickup Base 1946 Ford 1/2 Ton Pickup Base 1946 Ford 3/4 Ton Pickup Base 1946 Ford Deluxe Base 1946 Ford Sedan Delivery Base 1946 Ford Super Deluxe Base 1946 Mercury Mercury Base 1947 Ford 1 Ton Pickup Base 1947 Ford 1/2 Ton Pickup Base 1947 Ford 3/4 Ton Pickup Base 1947 Ford Deluxe Base 1947 Ford Sedan Delivery Base 1947 Ford Super Deluxe Base 1947 Mercury Mercury Base 1948 Ford Deluxe Base 1948 Ford F1 Base 1948 Ford F2 Base 1948 Ford F3 Base 1948 Ford F4 Base 1948 Ford Super Deluxe Base 1948 Mercury Mercury Base