These transmissions are old enough that finding one with lower than 80,000 miles is very difficult, so the price is a rough average of what is available. When one bearing cap is in close to the yoke, the other comes free from it and allows for the turning motion to separate the two. Most of my mechanicing experiance has been working on the old oilfield motors for the last 2 years. At press time, Jovanis was putting the finishing touches on the car before it will be strapped down to the chassis dyno and tuned up. Ask vendors if they can completely control line pressure and clutch to clutch shift events. Some tuners use it to their advantage, and some combinations have the car being run out in Fourth gear, while other scenarios the transmission will go into Fifth to complete the quarter-mile. I have never torn one down before.
I don't recommend them as an option for a transmission swap, unless your engine will break whatever is behind it anyway and you plan to rebuild or replace your trans after a few race events. Newer transmissions that are referred to as 4R70E or 4R75E have modifications that compliment Fords switching to throttle by wire. You might start to notice spinning without your truck actually moving forward or your transmission slipping in and out of gear while you drive. Ford ® 6R140 Ford ® 6R140 Ratios 1st - 3. I would not recommend using either of those transmissions in stock form behind even a mildly turned up Cummins diesel. Use a box-end wrench and an open-end wrench to access the nuts and bolts between the front of the transmission and the engine.
If this happens, all dismantled parts will be included in shipment. It involves modifying the valve body separator plate and gaskets as well as changing or removing accumulator springs to alter the shift timing of the transmission. The final step in the rebuild was a dyno testing of the transmission in-house dyno at the Hughes Performance facility. If your truck is geared right and you don't mind shifting gears, manual transmissions are fine, however they do typically have wider ratio spacing that can be very annoying and not so efficient when pulling a heavy load in hilly country. While these modifications can be done to 4R75W transmission, the results are not as dramatic as some of the details of the J-Mod bigger holes in the separator plate and gasket were done to the transmission in its design. As the last few bolts come out, make sure the weight is balanced correctly to avoid it falling from the jack.
If you have tall tires and high gearing you will be stuck starting out in first gear at every stop light, or slipping the clutch excessively in second- and that is a nightmare that is just as bad as living with poor automatic trans tuning. It depends on what vehicle you are talking about. . Got tired of it and im on to my next project that will start with a decent size motor from the start. I do not recommend aftermarket control systems for this transmission at this time. The 6R80 features six forward speeds—4.
It also has the second lowest reverse, and double overdrive- which is really nice for freeway cruising. I sell parts with full tech support to swap these transmissions into Dodges and Fordcummins conversion trucks, so if you are interested read more about it. If you must tow 25k with your pickup at 70 mph, then consider the not so easy task of stuffing a medium duty truck transmission in your pickup that has 8 gears or more. Here is the Stifflers driveshaft safety loop installed. I offer flat rate shipping on almost all items except for extremely heavy or large items which are calculated shipping. If you don't see a transmission listed it is because there are no aftermarket high performance parts available for it yet.
The two overdrive ratios of the six speed are great if your gear ratio and tire size are able to utilize them, and the Allison 6 speed has the highest overdrive of all listed in the chart. The 6R80 is a six-speed automatic, and, nearly a decade after its introduction, the transmission was a game-changer in both off-the-showroom floor as well as the swap world. On a modern car, you are much better off selling your automatic car and buying the same model with a manual transmission. Racers will probably never leave it, for the previous good reasons, and it is easy to find another core if you break one. The drawbacks to swapping this transmission into a Ford or Dodge pickup is the expense.
The 6R80 is a relatively tough transmission from the factory, but Jovanis shipped it to Hughes Performance to have it freshened and upgraded since it backs a supercharged Coyote 5. If the two ratios are similar, a higher axle ratio can be used to idealize the drivetrain efficiency. We originally were going to offer a 6r80 controller after popular demand, but decided it was best to just release the information to the public, so that you can build and design your own 6r80 swap for your custom Mustang. Use the truck's starter to turn the fly wheel enough to access the next torque converter bolt. Please verify with your local dealership or mechanic that this will fit your vehicle before purchase.
The torque converter is filled with the High Performance Lubricants trans fluid and slid into the transmission. No transmission swap worth doing is cheap. I bought this truck at 140,000 miles from an older lady, so I image the transmission fluid needs to be changed. Jovanis used Fragola black fittings and line to link the transmission to a front-mounted trans cooler. No matter what engine you have, these wide ratio changes result in poorer fuel economy, and require the engine to work harder when pulling heavy loads. A transmission cross member consists of fasteners at each end that secure it to the truck's frame, and two bolts that fasten the transmission to the cross member. The ratio drops off to 2.