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Huge inventory of 1966-1979 Ford Bronco and other off-road vehicle parts. Great prices and unmatched service from experienced Bronco builders.
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AUTOMATIC C4
The early Bronco had the option of an automatic transmission from 1973-77. Ford used the C4. All early Bronco C4s were column shifted. It should be noted that the Bronco C4's used the 164 tooth, 28oz. imbalance flexplate and these C4's were the pan fill style.
Pan fill C4's receive transmission fluid through the dip stick tube which goes into the right side of the transmission pan. Thus the term "pan fill".
During the same time period, Ford also used a case fill style of the C4 (transmission fluid goes into the transmission through the dip stick tube going into the case of the transmission). The case fill style was not stock in the Bronco. The case fill style was available with 157 and 164 tooth flexplates and corresponding bellhousings. Torque converters were also particular to the different flexplates.
With the C4 you can build a serious heavy duty transmission in a small package. Many aftermarket parts are available to beef up these units. It's a favorite from rock racers to daily drivers.
Here are approximate dimensions for everything we could think of that might pertain to the C4. You can use this chart to figure out OAL (over all length) of available combinations.
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| OverAll Length
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| C4 Bellhousing |
6" |
| C4 Body |
11" |
| C4 to Dana 20 Adapter (Stock) |
7 3/8" |
| C4 to NP 203 Adapter |
6 1/8" |
| NP 203 range box |
5 3/4" |
| NP 203 to Dana 20 Adapter |
1 1/2" |
| Dana 20 | 11 1/4" |
| Atlas 2 |
13 3/4" |
| C4 to Atlas Short Adapter |
3" |
| NP 203 to Atlas Adapter |
4 1/4" |
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203/Atlas Super Crawler
You've got to be kidding right? No, we're not! Think of the possibilities. How low can you go? This kit includes everything you need to hook up a 10 spline Atlas to a 203. Just pick the 8349 203/10-Spline Atlas Kit.
If you already have your Atlas we have the #8345 10-Spline Atlas Input Shaft Kit you will need to make this work. The Crossmember and shifter will need to be made by you or your installer because an NP 435/203/Atlas combo would be approximately 37" long from the front of the 435 to the end of the CV yoke on the Atlas. That is about 8" longer than stock.
Transmission Conversions
Wild Horses supports the do-it-yourselfer by offering individual parts and adapters. Please keep in mind many of these parts have been specifically fabricated to go with other parts we offer. It will be up to you to determine if these parts will suit your needs.
Early Broncos use what is called a "Flare Case" C4. As such the bellhousings we carry will be for this type of C4. This style will also go along with the 164 tooth flexplate and pan mounted dip stick/tube. The tranny to bellhousing bolt pattern will be different than the "Step Case" style C4. This style C4 uses a case mounted dip stick/tube and will have a 157 tooth flexplate. For further information and pictures describing these differences please check out the page created by Paul Pearson on Mustang Central on the following link.
When converting from a manual transmission to a C4 automatic, you will want to consider:
* Torque converter.
* C4 Transmission.
* A/T Starter.
* A/T Transmission Cooler.
* A/T Transmission Lines.
* Shifter (floor or column).
* A/T T-case Input Shaft.
* Neutral Safety Switch.
* A/T Pedal Assembly.
* You may need a new carburetor to use Kick-Down.
* Plus the items below:
Click here for a printable version
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Art Carr C4 Shifter
Item #: 8353AC
We tried the others and came to the conclusion that the Art Carr shifters are the most durable and dependable A/T shifte...
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Winters C4 Shifter
Item #: 8353
We tried the others and came to the conclusion that the Winters shifters are the most durable and dependable A/T shifter...
" [ read more ]
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Winters C6 Shifter
Item #: 8359
We tried the others and came to the conclusion that the Winters shifters are the most durable and dependable A/T shifter...
" [ read more ]
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Art Carr C6 Shifter
Item #: 8359A
Art Carr C6 Shifter
We tried the others and came to the conclusion that the Art Carr shifters are the most durab...
" [ read more ]
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C4 Deep Sump Oil Pan
Item #: 8356
C4 Deep Sump Oil Pan
Add an extra quart of transmission fluid with the deep sump C4 pan. These are so cool you wil...
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