Mustang Aod Manual Swap

Mustang Aod Manual Swap Tdi' title='Mustang Aod Manual Swap Tdi' />We take you stepbystep through the process of installing and setting up Lokars Ford AOD Cable Kit. Use this 19791993 Mustang T5 conversion kit to easily install a T5 transmission into your Fox Body. Bronco II engine swap. Bronco II. 196573 Mustang Transmission Parts and Conversions. Website and Contents Copyright 19982018 Automotive Internet Retailers, LLC DBA Mustang Depot, a division of. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Easily share your publications and get. The C4 to AOD Transmission Swap by Dan Jones. Over the 1994 Christmas holiday, I replaced the C4 automatic in my mothers 1971 Mustang convertible with an AOD. If youre rebuilding an existing engine, I suggest making improvements that yield more power without sacrificing drivability or breaking the budget. Fords Unlimited Car Club Tech Info C4 to AOD Transmission Swap. Over the 1. 99. 4 Christmas holiday, I replaced the C4 automatic in my mothers 1. Mustang convertible with an AOD. The main reason for the transmission swap was to gain the benefits of the AODs 0. RPM and increased MPG. The car in question is powered by a mild 3. CFM Holley, dual plane intake, mild cam, dual exhausts and, before the swap, had a perfectly good C4 transmission. B1968-ford-mustang%2Bengine.jpg' alt='Mustang Aod Manual Swap' title='Mustang Aod Manual Swap' />While this is essentially a bolt in job, there are lots of little details that you should be aware of to make things go smoothly. These details, in no particular order, include Procuring the Transmission. Extension Housing. Converter Compatibility. Gear Ratios. Working with Aluminum. Transmission Jack and Jackstands. Mustang Aod Manual Swap G8Transmission Tunnel Clearance. Exhaust System Clearance. Transmission Crossmember and Insulator. Flexplate Diameter and Balance. Block Plate. Nuts and Bolts. 4-Week 5K Training Program more. Starter Driveshaft and Yoke. Mechanical Interlocks. Shifter Operation. Mustang Aod Manual Swap Crown' title='Mustang Aod Manual Swap Crown' />Speedometer Gear. Electrical Connections. Throttle Valve Operation. Hydraulic Fittings. Dipstick Tube. Drain Plugs. Transmission Fluid. Shift Kits and Transmission Coolers. To give you an idea of whats involved in a swap like this, Ive covered my experience with each of these details in the paragraphs below. Ive also listed some comparative transmission weights, dimensions, and gear ratios at the end. Procuring the Transmission. If youre pulling the AOD from a car, getting all of the related bits bolts, electrical connector, dipstick tube, converter, yoke, block plate, linkages, levers, shifter, hydraulic fittings, etc., will make life a lot easier. However, we used a transmission purchased from a friend of my Dads who rebuilds transmissions. The price was right 1. Because of the Christmas holiday, getting all the right pieces was harder than usual, but we managed. Extension Housing. When purchasing your transmission, be aware that there are two tailshaft lengths used on AODs. The short model is the one that is closest to the C4 in overall length. I forgot to measure it but the SVO catalog says its 1. The catalog also indicates the short extension housing AOD was used in all passenger cars except rear wheel drive Lincoln Marks and Continentals not sure about the Town Cars, 2. WD F 1. 50 trucks built after 1. E 1. 50 vans. Also, dont confuse the AOD with the AOD E, which has the rear mount located farther aft and uses an electronic valve body that requires a separate computer like that available from Baumann Engineering unless you are using an EEC IV engine computer. There are also extension housing variations among C4s, with a short tailshaft model 6 58 used on some pickups and vans. Our C4 was the standard tailshaft model 1. Converter Compatibility. The AOD transmission and torque converter are a matched pair. The AOD uses a hollow two piece input shaft one shaft inside the other for lock up purposes and requires a specific torque converter. This arrangement is used to bypass the converter torque multiplication in higher gears 6. This is an attractive feature when using a high stall speed converter, since locking up the converter eliminates the excessive slippage and attendant heat generation, RPM rise, and increased fuel consumption associated with such converters. On the down side, the input shaft is weaker than a similarly sized solid one piece design and you lose the torque multiplication effect. Gear Ratios. The first three gears of the AOD and C4 are of similar ratio. We were looking for longer legs and increased fuel economy so we left our rear end gears alone. If better acceleration is the goal, a ring and pinion swap may be in order. The beauty of this swap is that the AODs 0. Come to think of it, weve got some extra 3. I can talk Dad into swapping them in one of these days. Working with Aluminum. Like the C6 and C4, the AOD has an aluminum case so use a never seize compound on the aluminum threads e. Also, when working with small aluminum threads e. I prefer a beam type torque wrench so I can tell when Im approaching the desired torque value. I dont trust the click type wrenches on the little stuff. Transmission Jack and Jackstands. Despite its aluminum case, the AOD is no lightweight. I measured 1. 50 lbs without fluid or converter. Moms bathroom scale for the tranny and 3. Get the car up in the air as high as possible to give yourself some room to maneuver. We used a pair of stacked railroad ties underneath each front tire and a pair of tall jackstands under the rear axle housing. Transmission Tunnel Clearance. The AOD is beefier around the middle than the C4, so it uses up more space in the transmission tunnel. Our 7. 1 Mustang was designed to swallow a C6, so there was no problem. It might be tight on cars with narrow tunnels like 6. Mustangs, but Im told they will fit with no problem. Exhaust System Clearance. No problem here on our particular car dual exhaust without a crossover. We could have installed the AOD without ever touching the exhaust, but we decided to unbolt the pipes from the exhaust manifolds for extra working room. This will vary from car to car so be prepared for potential exhaust work. When working with exhaust, its always a good idea to have a torch around to loosen old rusted on bolts. Soaking in a rust penetrant is a good idea as well. Since I had the pipes unbolted from the manifolds, I took the opportunity to put in new exhaust donuts. Transmission Crossmember and Insulator. The only bit of true fabricating that was required for this swap was the transmission mount crossmember. While the AOD and C4 overall lengths are within a half inch of each other, the mounting pad for the insulator on the AOD is 2 inches farther aft, so the crossmember mounting point needs to be moved an equal amount. Whether you need to buy or fabricate a custom cross member depends on the car youre swapping the transmission into. On some full sized cars, its supposed to be as easy as switching to a second set of aft mounting holes. Since I planned to do the swap over Christmas break, in another state, and was spending someone elses money, I decided to purchase a custom crossmember, rather than fabricate one. I purchased it from a shop thats now out of business but there are other vendors who carry the crossmember. Also, a friend who swapped an AOD into his 6. Mach 1 found an FMX crossmember can be adapted to fit with only minor modification. Flexplate Diameter and Balance. One of the more important parts of the swap is to choose the proper flexplate for your application. The integral bellhousing AOD requires a flexplate with 1. The C4, however, uses a detachable bellhousing that is matched to one of three different flexplate sizes 1. The 1. 48 teeth flexplates are comparatively rare, having been used in cars like the V8 Mustang II. The 1. 57 teeth flexplates were generally used in 2. W3. 51. C applications. The C4 1. 64 teeth flexplates and the AOD 1. All 3. 51. Ws and 3. Cs use 2. 8. 2 oz in balance factors. In my case, the flexplate in the 1. Mustang came with 1. Since they both have 1. I was under the impression that flexplates from either a 3. W wAOD or early 2. C4 from a full size car would work. Looking through the books at the parts store showed different part numbers, and listed the 3. W part as working with an AOT, not AOD, transmission. Not knowing if the AOT indicated a subtle variation that I was unaware of, I decided to order the early 2. C4full size part OEM D1.