Harley Davidson Knucklehead Engine Specs

Blockhead 1984-99 All Blockheads have the same displacement of 80 cubic inches.

Harley davidson knucklehead engine specs. Four stroke 45 V-Twin OHV. This engine is not to be confused with the Sportster Evo same name different engine Twin Cam 1999-present There are 88-ci 96-ci 103-ci and 110-ci versions. Harley-Davidson pulled ahead of Indian in 1936 with the introduction of its first overhead valve V-Twin.

The owner rebuilt the engine to factory specs and the transmission was subjected to the same treatment. The Knucklehead is a 74-cubic-inch 1200 cc engine that was distributed between 1936. To understand how and why Harley-Davidson and the rest of the motorcycle industry got to where it is today it is important to first understand the 1936 model EL.

When the Harley-Davidson EL was introduced in 1936 with its all new overhead valve 61 cu. In 1941 Harley-Davidson introduced the 74-inch 1208cc OHV engine making 53 horsepower and the Knucklehead would remain in production until the introduction of the Panhead in 1948. Now nicknamed the Knucklehead for its bulbous rocker boxes surprisingly the new Harley-Davidson big twin was developed in Depression era America.

The two models that were manufactured were the 61cuin EL and 74cuin FL model. In 1941 the engines capacity was increased to 74 cu. Dealers can access this manual through our Cyclepedia PRO Product.

The famed Knucklehead engine. Lil Go Go Shop. This is an original 1948FL Engine with a clear ery old NC Title.

This motor has been sitting a long time and the person we got it from knew very little about it. The frame forks engine and much of the styling were all new. Harley Davidson FL 1200 Type 74 Knucklehead.