This circulates fluid through the converter and warms it quicker The best and preferred way is to just drive the vehicle carefully during cold weather the first mile or so. Using the above transmission components, along with factory four-pinion planetary gear-sets, shafts, and drums, Inline Performance Specialists got busy performing the necessary modifications and assembling our transmission. A Transgo Shift or Reprogramming Kit will correct this. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. Watch for antifreeze in your oil.
If it is severe, the converter will need to be changed. Deep Pan package will also cause leaks I stick to cork in all cases. Normally the original fluid is not to be changed except for high performance or severe service situations. A high-mileage torque converter sometimes has a whirring or buzzing noise to it. This valve body requires some internal modifications to the transmission to work properly, but Tod at Inline Performance Specialists handled the mods with no problems. On pre-1971 727s and especially hard used units, it wasn't unusual to get engine spin or flare-up during the 2-3 shift. Since both first and second gear use some of the same planetaries, the noise will sometimes be present in second gear but generally not as loud.
This is one sure way to guarantee friction material wear and eventually transmission failure. And while some may argue that a 727 would be the logical choice for this application, we picked a 904 for its lighter total weight and lower internal friction. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles. Rated to handle up to 750 horsepower. Chrysler prints some of the best troubleshooting information available to the public in every Factory Shop Manual. The individual gear ratios are achieved through three planetary gear sets. The speedometer gear and extension housing seal generally only leak when the output shaft is turning, which is normally while the vehicle is in motion.
The differential gear ratio and rear tire diameter are required to purchase this item separately. The throttle rod has to be hooked up and adjusted correctly unless a special racing valve body has been installed. Just remember to start with good equipment before you abuse it or use it beyond its intended limits. Heavy duty transmissions can handle a lot of horsepower but when they go, get your wallet out because it probably won't be cheap to repair them. A solution is to get the fast idle set correctly.
The fix was to install a different spring in the valve body to raise the lock-up speed. Note: There have been many engineering changes in this transmission since its introduction. This tool compresses the piston so the retaining ring and piston can be removed for seal replacement. Closing Comments I've had a good time writing this article on Torqueflites. But at some point that powerful big-block, small block, or Hemi in your Mopar will overpower a stock TorqueFlite transmission, requiring the transmission to be upgraded to handle additional power and torque. Look to see if the fluid is relatively clean looking and not burnt smelling. Your hub for horsepower Get first access to hit shows like Roadkill and Dirt Every Day Join free for 14 days now Finding a 727 or 904 in a scrap yard is relatively easy.
The extension housing seal, speedometer gear seal, dipstick 0-ring and pan gasket are all relatively simple and inexpensive to repair even with the transmission still installed. While the 727 and 904 automatic transmissions may seem like black magic to some, the reality is that they operate on basic hydraulic and mechanical principles and can be modified to handle extreme levels of horsepower if the right components are chosen. These units are configured to meet or exceed current offerings in the market place. No additive is going to quiet worn planetaries forever. Check the oil for a gritty feel. The real key to troubleshooting is to follow a prescribed sequence until you are able to locate the problem and correct it.
A poorly running engine will usually cause late, firm shifts because the throttle is being held down much further than normal. As in the two previous sections, I'll deal with the 904 and the 727 together. If you do decide to change the fluid, drain the converter also and blow out the cooler lines with them disconnected at the transmission and change the filter. Tod has put together plenty of 727s for us over the years, and his attention to detail ensures the transmission will operate to the limits of the parts inside it. Finished off with a deep sump pan and complete dyno testing by Performance Automatic professionals. Again, refer to the service manual for details. Antifreeze in the fluid is pretty hard on friction material.
What we will tell you, however, is that the engine we built with the help of Indy Cylinder Head made enough power that it should propel our 2010 Dodge Challenger to sub-ten second elapsed times in the quarter mile. If you drive the car every day, you are probably already past this stage. A service manual for your particular model year and application is a must to check tolerances and torque specifications. Special slide hammers are needed for this operation but they are relatively inexpensive. The trans-brake uses an electric solenoid to actuate the reverse band while the shifter is in first gear, and once the button controlling the reverse solenoid is released the car almost instantly leaves the line.
Improper throttle linkage will give early, soft shifts or late, firm shifts. To handle the task we enlisted local Mopar shop and transmission specialist Tod Struck of Inline Performance Specialists. In 1973 the filter was enlarged approximately 50% to prevent early restriction if nothing is wearing out, the filter will probably never plug anyway. Again, this is a good time to go through the whole overhaul procedure if you feel certain you can do it or you have a trustworthy mechanic. . Originally featuring a rear hydraulic pump, pre-1966 TorqueFlites could actually be push-started since the pump was driven from the output shaft rather than by the torque converter as in modern versions. However, as miles accumulate during normal or competition use, first gear tends to get more noticeable.