It weighed approximately 110 pounds dry (without fluid) and without the locking torque converter, compared to the 228 pounds of the Ford-O-Matic. Weight: The C4 transmission gear is significantly lighter than the Ford-O-Matic. The first letter hints at the decade when the C4 was produced: A – 1940s, B – 1950s, and C – 1960s.įor instance, C5SP translates to a 1965 C4 transmission. Part Number: This is a 4-digit code, including both letters and numbers. What are the specs of the C4 transmission? These new transmissions were designed to fit Ford’s high-power applications big-block V8 engines. The Sharonville plant was known for producing not only the C4 but also the C6 automatic transmissions. This plant was responsible for producing it until 1981. The C4 transmission body was primarily made at the Sharonville transmission plant in Ohio, United States. That is why there are minor variations in gear ratios across different model years and vehicle applications (especially heavy-duty applications). However, the above ratios are common for standard C4 transmissions.įord made several updates and improvements to it over the years. Some variants of this popular transmission body may have slightly different gear ratios. This gear is used for high-speed cruising and efficient fuel consumption. It offers a direct drive, meaning there is no torque multiplication. Third Gear (3rd): The third gear ratio is usually 1.00:1. It is also used during moderate driving conditions. It strikes balances of acceleration and speed. Second Gear (2nd): The second gear ratio is typically around 1.46:1. This gear provides strong initial torque and is used for starting the vehicle from a standstill. These C4 gear ratios are as follows:įirst Gear (1st): The first gear ratio in the C4 transmission is generally around 2.46:1 or 2.40:1. How long is a C4 transmission? The Ford C4 transmission typically came with three different gear ratio configurations. Or, check for a nearly square pan measuring 9 x 10 inches with 11 built-in bolts. You will see a special tag in the transmission (usually on the passenger’s side) that states its name, which is C4. Its simplified design also made it easier to manufacture and maintain. It helps reduce the vehicle’s overall weight and improves fuel economy. This makes it more suitable for a wide range of driving conditions.Īdditionally, the C4 was more compact and lighter than its predecessor. The three-speed design of the C4 allowed for smoother shifting and better acceleration. The C4 transmission was part of Ford’s efforts to keep up with the production demands in the automotive industry. It was designed to improve vehicle performance, fuel efficiency, and drivability. The C4 transmission, a three-speed automatic model, was introduced in the early 1960s. What is a C4 transmission? Ford decided to develop the C4 to replace its previous two-speed Ford-O-Matic transmission.
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