How much horsepower can a c4 transmission handle?

I’d say at least 400 ponys as long as it is in good shape. The question is more about “How long will it last” to me. There are guys running C4’s behind built 351C’s at the strip but they are highly modified. A stocker IMHO will take a 400 HP street blast every once in a while without grenading.

Is a C4 transmission good?

The most reliable automatic transmission Ford has ever produced has been the C4 Cruise-O-Matic. The C4 is a simple three-speed automatic transmission you can rebuild in your home garage with common hand tools. … Placing the shifter on the small dot kept the transmission in second gear, for slow, slippery road driving.

Can you beef up a C4 transmission?

Ford’s C4 Cruise-O-Matic transmission is the most reliable automatic Ford has ever produced. It is simple by design. In fact, it is so simple you can tear it down and rebuild it in your home garage using the Ford Shop Manual because no special tools are required.

Will a C4 transmission fit a 302?

Registered. The 6cyl C4 will not work with the 302 , unless the tranny is ripped open and has some V8 pieces installed .

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How much horsepower does a C4 make?


Engine Model Year Power
5.7 L (350 cu in) L83 V8 1984 205 hp (153 kW)
5.7 L (350 cu in) L98 V8 1985–1986 230 hp (172 kW)
1987–1989 240 hp (179 kW)
1987 (B2K Callaway) 345 hp (257 kW)

Which is better C4 or C6 transmission?

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.

How many quarts does a C4 transmission hold?

With the torque converter and pan empty, the C4 requires eight quarts of fluid. Add five quarts first, then check the dipstick reading with the car on a level surface.

Can you add overdrive to a C4 transmission?

Overdrive is another popular upgrade with a late-model AOD automatic or a five/six-speed manual. But you can also upgrade to a Gear Vendors overdrive for your C4/C6 automatic or four-speed Top Loader transmission. … Set your Mustang in motion and your transmission’s output shaft turns the overdrive’s pump.

How many clutches are in a C4 transmission?

See all 27 photos 2 This cutaway shows the C4’s internals with its intermediate (front) and low-reverse (rear) bands, two multi-disc clutches, and two planetary sets. The C4 is a simple automatic transmission with separate bolt-on bellhousing for six and small V-8 applications.

Are all C4 transmissions the same?

A redesigned C4 valve body and transmission case came along in 1970, which was used for the C4’s production life through 1981. In Drive, the C4 shifts the same as the Dual-Range at the large green dot with a normal 1-2-3 upshift program and the same gear ratios throughout.

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How many splines does a C4 transmission have?

One of the most important changes to happen to the C4 was the increase from 24 to 26 splines on the input shaft, which increased the durability of the transmission.

How heavy is a C4 transmission?

Weight. Ford C4 is a medium-duty transmission judging from its lightweight of 130 lbs dry w/ torque converter and its design with an aluminum case.

How much horsepower 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.

How do I tell what year my C4 transmission is?

The easiest way is to check the transmission identification tag, which is located under one of the servo bolts on the passenger-side servo. On some transmissions the tag may be located under one of the driver-side servo bolts. There should be a series of numbers and letters which tell what year it is.