ETE REMAN Blog

Drag Racing Upgrades for the C6 Transmission in Your Ford Mustang

Posted by on Friday, October 3rd, 2014

The C6 is a heavy-duty, three-speed automatic transmission made by the Ford Motor Company. It was built during the same time period as the C4 and FMX transmissions. The C6 is a purely mechanical transmission that incorporates no electronics except for a very simple neutral safety switch. The first C6 transmission was produced way back in 1966 and the last one was produced in 1996. That is a very long lifespan for an automatic transmission.

The C6 transmission, in stock form, can handle about 475 lb. ft. of torque, although if you modify them, they can handle much more. The C6 was eventually phased out of use because it lacked an overdrive gear. An overdrive gear was required to meet more strict CAFE mileage laws. In 3rd gear, this transmission had a 1:1 ratio.

The C6 could be found in many Ford products, including the Mercury Comet, the Mercury Cougar, the Mercury Meteor, the Mercury Montego, the Ford LTD, the Ford Thunderbird, and the Ford Ranchero. It could also be found in the Ford Mustang.

The Mustang came with the C6 transmission

The Mustang came with the C6 transmission.
Source: mustangsandfastfords.com

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Driving Habits That Can Destroy the 700R4 Transmission in Your Corvette

Posted by on Wednesday, October 1st, 2014

The 700R4 was General Motors first attempt at building an automatic transmission with an overdrive gear. This transmission comes from a family of transmissions that include the 4L60, the 4L60E, the 4L65E and the 4L70E. The early 700R4 transmissions were plagued with problems and quickly developed a reputation for being fragile (and easily breaking). This transmission has a first gear ratio of 3.6:1. This ratio is much steeper than the first gear in the transmission of the TH350, which the 700R4 replaced. The result was much better off the line performance. On the other end of the scale, the700R4 had an overdrive gear with a 0.7:1 ratio. When compared to the TH350, the result was a drop of 30% in cursing RPMs. GM first put the 700R4 transmission into service in 1982, and it remained in service for many years, until replaced by the 4L60 transmission. The 700R4 automatic transmission was used in many vehicles, including the Blazer, the S10, the Caprice, the Camaro, the Firebird, the Impala and the Suburban. It was also used in the Corvette.

The Corvette came equipped with a 700R4 automatic transmission

Nice parking job! Source: corvettetrader.com

 

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Is the Vibration in My Dodge Challenger Coming from My A727 Transmission?

Posted by on Monday, September 29th, 2014

The A727 transmission is a three-speed automatic transmission designed by the Chrysler Corporation for use in Dodge, Chrysler, Plymouth and AMC vehicles. Unlike all modern day automatic transmissions, this transmission does not include an overdrive gear. Instead, it features a 1:1 final drive ratio that makes it unfit for keeping up with modern day traffic and high speeds. Very early Torqueflite transmissions were made from heavy cast iron and featured push button shifters.

In 1962, they started manufacturing the transmission from lightweight aluminum and switched over to a more conventional style shifter. The A727 was first put into production in 1962 and remained in the line up all through the end of the 1978 model year.  This transmission came in two types — one with a bolt housing pattern for small block engines and the other for big block engines.  There was also an odd ball AMC bell housing.  The A727 was the most heavy duty automatic transmission made by Chrysler during the period, and it could often be found in pickup trucks, vans and high horse-power passenger vehicles.

The Dodge Challenger came with the A727 transmission

The A727 was found in high horse-power passenger vehicles like the Dodge Challenger. eSource: hemmings.com

 

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Get the 700R4 Automatic Transmission in Your GMC Ready for the Snow Plowing Season

Posted by on Thursday, September 25th, 2014

The 700R4 automatic transmission was one of General Motors very first overdrive automatic transmissions. It has four speeds, with the fourth gear having a 0.70 (30%) overdrive ratio. GM designed the overdrive transmission in order to meet stricter CAFÉ (company average fuel economy) standards. It is based somewhat on the earlier three speed TH350 transmission. The 700R4 was eventually replaced with a full electronic version of the transmission and renamed the 4L60E. The 700R4 was used extensively in the General Motors lineup, and could be found in such vehicles as the Corvette, the Impala, the Firebird, the Syclone, the Blazer (both full size and the S-10), the Suburban and the Chevrolet C/K. It was also found in the GMC Jimmy.

The GMC came equipped with the 700R4 automatic transmission.

The GMC Jimmy came equipped with a 700R4 automatic transmission.
Source: craigs-list.pro.com

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How to Remove the 4R70W Transmission from Your F150

Posted by on Tuesday, September 23rd, 2014

The 4R70W is a four-speed automatic transmission produced by the Ford Motor Company. It comes from a family of Ford overdrive transmissions that also includes the AOD, the AODE and the 4R75W. Similar to most automatic overdrive transmissions of that time, this transmission incorporates a case of aluminum construction, a fully electronic valve body and a lockup torque converter. This transmission uses a first gear ratio of 2.84:1 and a final overdrive gear ratio of 0.7:1 (30% over driven). The 4R70W transmission was first used in a production vehicle back in 1993 and remained an optional transmission through the 2004 model year. This transmission was widely used throughout the Ford and Mercury lineup. The Thunderbird, the Crown Victoria, the Explorer, the Expedition and the Mustang all used this transmission. It was also found in the F150 pickup truck.

The Ford F150 came with the 4R70W transmission

The Ford F150, equipped with the 4R70W transmission. Source: trucktrends.com

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How to Stop the A727 Transmission in Your ’77 Dodge Ram Pickup from Overheating

Posted by on Wednesday, September 17th, 2014

The A727 is a three-speed automatic transmission designed and built by the Chrysler Corporation. It is primarily designed to be used in vehicles with front-mounted engines and rear wheel drive, although it can be used in conjunction with a transfer case in four-wheel drive applications. Very early TorqueFlite transmissions used a cast iron case, which was both heavy and expensive. In 1962, Chrysler replaced the cast iron case with a stronger, but lighter aluminum one. In 1978, they added a lockup torque converter. The A727 transmission remained in this configuration up to its departure from the line-up in 1991. The A727 came with two different bell housing bolt patterns — one for small block engines and another for big block engines. The A727 was an option in many vehicles, including the Chrysler 300, the Newport and the New Yorker. It was also available in the Dodge Charger, the Challenger, the Dart and the Dodge Ram Pickup Truck.

A sturdy Dodge Ram Pickup Truck

The Dodge Ram pickup came with the A727 transmission.
Source: machopowerwagon.com

 

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Why is the 545RFE Transmission in My Jeep Wrangler Slipping?

Posted by on Monday, September 15th, 2014

The 545RFE is a five-speed automatic transmission built by the Chrysler Corporation. It shares many of its internal and external parts with the four-speed automatic 45RFE transmission. Both transmissions use a modern lightweight aluminum case, an electronic valve body and a lock up torque converter. The 545RFE transmission comes with a 3:1 first gear ratio that helps get the vehicles it’s in moving off the line quicker. It has double overdrive gears of 0.75:1 (25% overdrive) and 0.67:1 (33% overdrive) that greatly help in improving gas mileage and drivability. First put into use in 2001, the 545RFE transmission is still produced today. This transmission is used in many vehicles, including the Jeep Grand Cherokee, the Jeep Liberty, the Jeep Commander, the Dodge Ram pickup truck, the Dodge Power Wagon pickup truck, the Dodge Dakota and the Dodge Durango. It’s also used in the Jeep Wrangler.

The Jeep Wrangler came with the 545RFE transmission.
Image source: Cardomain.com

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What’s That Thumping Noise Coming from the C6 Transmission in My Ford Bronco?

Posted by on Thursday, September 11th, 2014

The C6 is a very sturdy three-speed automatic transmission made by the Ford Motor Co. Except for a very modest neutral switch, the C6 is a simple mechanical transmission that does not use electronics. First put into production all the way back in 1966, it was finally discontinued from production thirty years later, in 1996. The C6 transmission is rated to handle up to about 475 lb. ft. of torque. Modified C6 automatic transmissions can handle even more. The C6 was taken out of production because it didn’t incorporate an overdrive gear, which would have helped the C6 automatic transmission meet more strict CAFÉ mileage laws. The C6 was used in many Ford products, including the Mercury Cougar, the Mercury Comet, the Mercury Meteor, the Mercury Montego, the Ford LTD II, the Ford Thunderbird and the Ford Mustang. It was also used in the Ford Bronco.

 

The Ford Bronco came with the C6 automatic transmission

Source: 4x4offroads.com

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DIY Maintenance: Change the Oil and Filter In Your F150′s AOD Transmission

Posted by on Tuesday, September 9th, 2014

The AOD is a four-speed automatic overdrive transmission built by the Ford Motor Company. It was Ford’s first attempt at building an automatic transmission with an overdrive gear, and lead to the development of the AODE, 4R70W, 4R70E, 4R75W, and 4R75E transmissions. All these transmissions are based lightly on the Ford FMX transmission. The AOD was originally designed to replace the older C4 and C5 three-speed transmissions in an attempt to help vehicles meet new (for the time period) CAFÉ fuel mileage requirements.

AOD transmission. Source: media.collectorcarpricetracker.com

The F150 came with the AOD transmission.

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Tips for Keeping the 6HP26 Transmission in Your BMW X5 Running Strong

Posted by on Friday, September 5th, 2014

The 6HP26 is a six speed automatic transmission made for BMW by the ZF Friedrichshafen AG Company. It uses a special planetary gear set that can provide more gear ratios while making the transmission lighter than its predecessor — a five-speed transmission. This transmission is used mainly in high-end luxury vehicles, but it has recently found its way into some not so high-end luxury vehicles such as the Hyundai Genesis. Rated for use in motors that put out as much as 440 Ft Lbs of torque, it is a fairly heavy duty transmission. The 6HP26 comes with a very steep first gear ratio of 4.17:1, which is great for quick jack rabbit starts. It also comes with a 0.69:1 ratio overdrive gear, which helps the car it’s used in get better gas mileage as well.  First put into production in 2001, this transmission is still being produced today.  The 6HP26 can be found in a wide variety of vehicles, including the Jaguar XKR, the Jaguar XJ, the Ranger Rover, the Rolls Royce Phantom, the BMW 5 series, the BMW 3 series, the Maserati Quattroporte, the Kia Mohave, and finally, the BMW X5.

BMW X5 (Wiki)

The BMW X5 comes with a 6HP26 automatic transmission.

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