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How many speeds is a C6 transmission?

Author

David Richardson

Published Mar 21, 2026

How many speeds is a C6 transmission?

Produced from 1966–1996, the Ford C6 transmission is a heavy duty 3-speed automatic gearbox that saw use in some of the Blue Oval’s most popular models.

How much HP can a C6 transmission handle?

The new planetaries bring the transmission’s rating to more than 2,000 hp, provided the input shaft has been swapped. Like all aftermarket transmission builds, the new clutch packs have better surface material and additional clutches for greater gripping power.

What C6 transmission do I have?

Determine where the speedometer driver gear is located. If it is on the driver’s side of the extension housing, it is the C6 but a C4, if it is at the rear of the transmission at the point, then driveshaft is connected to the transmission’s back.

What are the gear ratios in a C6 transmission?

Gear Ratios The C6 transmission comes with First, Second, and Third gear ratios that are 2.40:1, 1.40:1, and 1:1 respectively. Nonetheless, a wide-ratio gearset can be used to provide a First gear ratio that is numerically larger. The result will be 2.72:1 and 1.54:1 for the first gear and second gear, respectively.

Is the C6 a good transmission?

The C6 was produced with four basic bell-housing bolt patterns over its long production life and is a very rugged transmission designed for high-power applications.

Is a C6 transmission a AOD?

The C6 is a non-electronic, three-speed transmission. The AOD features a four-speed, non-electronic transmission.

Can you add overdrive to a C6 transmission?

Adding overdrive to a C6 is physically impossible, but the 4R100 can donate its forward planetary gear set for shorter first and second gear ratios. This creates a “wide-ratio” C6.

Does a C6 transmission have overdrive?

The Ford C6 automatic transmission is a great example of this in the automotive world because it’s also the foundation of newer automatics in Ford trucks. Adding overdrive to a C6 is physically impossible, but the 4R100 can donate its forward planetary gear set for shorter first and second gear ratios.

How many quarts does a C6 transmission take?

FLUID CAPACITIES
FordTorque Converter
C45.5 quarts2 quarts
C67 quarts2 quarts
AOD/AODE6.5 quarts2.5 quarts

Which transmission is better C4 or C6?

The C4 transmission was primarily used in cars. The C6 transmission could handle more power. Due to the ability to handle more power, the C6 transmission was used in many Ford trucks with bigger engines, and in larger cars that were manufactured with bigger engines.

What engines fit a C6 transmission?

The C6 was used in trucks and cars with larger engines. Five different bell housing varieties exist for use with various Ford engine families: The Windsor pattern was used on the 300 I6, the Ford Windsor engines and the 351 Cleveland. The 460 pattern was used on the 351M and 400 and all of the Ford “385” engines.

How can you tell the difference between a C6 and AOD?