Autorestomod takes a look at the different choices in Automatic OverDrive (AOD) transmissions. They hook up with Monster Transmission and Baumann Electronic Controls and use a US Shift Quick 4 with this install…
General Gearing Information
- C-4 2.46 1.46 1.00
- C-6 2.46 1.46 1.00
- AOD 2.40 1.47 1.00 .67
- AODE 2.40 1.47 1.00 .67
- 4R70W 2.84 1.55 1.00 .70
AOD Transmissions
AOD Pros:
- Now the cheapest way into an automatic overdrive for your Ford. It can be built to handle almost anything.
- Lost of choices for mounting in Mustang.
- It can be updated with AODE parts.
AOD Cons:
- TV cable setup can be an issue.
- Done wrong it will lunch the transmission. Mounting to other Ford chassis will be less easy, but many ran the FMX which is a cousin to the AOD.
- Lower numerical gearing than the stock C4 or C6. The car will be a bit more sluggish off the line.
- The thin valve body is more likely to warp.
- Weak input shaft (stock)
Torque Limit: 450hp (average) Can be built to handle 600Plus HP.
Parasitic Draw: 45 hp estimate. We’ve seen numbers as high as 55-60 (same as the Ford C6) (C4 is our base at 28 hp).
Gearing:
1st: 2.40:1
2nd 1.47:1
3rd: 1.00:1
OD .67:1
AODE Transmissions
AODE Pros:
- Stronger than the original AOD larger overdrive band and overdrive servo.
- Stronger input shaft.
- Electronic controls for easier setup.
- Lock-up converter: You can unlock the converter for acceleration or unlock it for efficiency.
AODE Cons:
- Costs are higher due to electronic controls and better components.
- Lower numeric ratios than your original C4/C6 equals less acceleration if a stock axle is maintained.
Torque Limit: 450hp (average) Can be built to handle 600 plus HP.
Parasitic Draw: 45 hp estimate. We’ve seen numbers as high as 55-60 (same as the Ford C6) (C4 is our base at 28 hp).
Gearing:
1st: 2.40:1
2nd 1.47:1
3rd: 1.00:1
OD .67:1
4R70W/AOD-EW Transmissions
4R70W/AOD-EW Pros:
- Top of the line Overdrive Transmission.
- Ratios more resemble those from the C6 and C4 allowing you to run your stock ration with no loss of acceleration on takeoff.
- Lots of choices for controlling the transmission via aftermarket shift controllers like the ones from US shift.
4R70W/AOD-EW Cons:
- Costs are higher due to electronic controls and better components.
Torque Limit: 506 hp (average) Can be built to handle more.
Parasitic Draw: 45 hp estimate. We’ve seen numbers as high as 55-60 (same as the Ford C6)
Gearing:
1st: 2.48:1
2nd 1.55:1
3rd: 1.00:1
OD .70:1
