ETE REMAN Blog

Performance Upgrades for the A727 Transmission in Your HEMI-Equipped Charger

Posted by on Tuesday, August 5th, 2014

The A727 is a heavy-duty, three-speed automatic transmission designed and built by the Chrysler Corporation for use in Dodge, Plymouth, and Chrysler vehicles. This aluminum cased transmission was first put into use way back in 1962 (there was an earlier cast iron version produced before this date; the A488) and was used all the way up to the end of the 1991 model year. That’s a very long run for any automatic transmission!

The A727 was a pure mechanical and hydraulic-controlled transmission and incorporated no electronics except for a neutral safety switch. The A727 automatic transmission used a 2.45:1 first gear ratio and a 1:1 final gear ratio. Eventually, the A727 was replaced by the transmissions that used an overdrive gear, including the A518 and the A618. Internally, the A727 goes by the code of 36Rh and 37 RH.

This transmission could be found in many Chrysler products, including the Dodge Challenger, the Ram pickup truck, the Dodge Dart, the Coronet, the Demon, and the Dayton. It was also found in the ultra-high performance Dodge HEMI Charger.

Dodge Charger (Wiki)

The 426 Hemi Dodge Charger came with the A727 automatic transmission.

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Tricks to Boost the W5A580 Transmission in Your Rock Crawling Jeep

Posted by on Monday, August 4th, 2014

The W5A580 is a five-speed automatic transmission built by Mercedes Benz for use in a number of Chrysler branded vehicles (back when MB owned Chrysler). This is an aluminum transmission that uses a full electronic valve body and lock up torque converter. It comes with a very low 3.58:1 ratio first gear (great for rapid takeoff or rock crawling) and a below average 0.83:1 ratio (17% overdrive) fifth gear. A cool feature on this transmission in that it comes with a manual mode that gives you more control over the vehicle’s shifting characteristics.

This transmission was deigned to be used with vehicles that had the engine mounted in a longitudinal position and could be used in both two-wheel drive and four-wheel drive applications (with a transfer case). The W5A580 transmission could be found in many different Chrysler vehicles, including the Dodge Magnum, the Chrysler 300, the Charger, the Challenger, the Durango, the Jeep Commander, and the Grand Cherokee. It could also be found in the Jeep Wrangler.

Source: forums.vwvortex.com

Update the Jeep Wrangler’s W5A580 automatic transmission for rock crawling.

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Performance Upgrades For The 6L90 Transmission In Your 2012 Camaro ZL1

Posted by on Friday, August 1st, 2014

The 6L90 (and similar 6L80) is a six-speed automatic transmission designed and built by General Motors.  It was designed to replace the four-speed 4L80E, and it was eventually replaced by the 8L90 transmission. It uses an extremely steep 4.027:1 ratio first gear (excellent for getting off the line) and a very generous 0.667:1 ratio (33% over drive) final 6th gear. This transmission actually incorporates two overdrive gears, the other with a ratio of 0.852:1 (15% over drive). This transmission is considered to be of a very heavy-duty design, and was mainly used in the top of the line high performance vehicles. These include vehicles like the Cadillac XLR-V, the Corvette, the Holden VE Commodore, the Pontiac G8, the Cadillac STS-V, the Cadillac CTS-V and the Holden VF Commodore. It could also be found in the 2012 Camaro ZL1.

The 2012 Camaro ZL1 came with the 6L90 transmission

Source: autoblog.com

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How to Prolong the Life of the A541E Transmission in Your Toyota Solara

Posted by on Thursday, July 31st, 2014

The A541E is a four-speed automatic transmission built by the Toyota Motor Corporation. It comes from a family of A5XX transmissions that includes the A540E and the A540H. This version of the transmission uses a steep 2.8:1 first gear ratio and a very generous 0.735:1 overdrive ratio, which is very helpful in increasing the mileage of the vehicles in which it’s installed. The A541E transmission was first used in 1994 and remained in production through the end of the 2001 model year. This transmission could be found in a variety of vehicles, including the Toyota Avalon, the Sienna, and the Camry, along with the Lexus ES 300. It was also found in the V6 engine-equipped Toyota Solara.

Solara, Source: cardomain.com

The Solara came with the A541E automatic transmission.

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Keep the 4L80E Transmission in Your Shuttle Bus Running Like a Top

Posted by on Wednesday, July 30th, 2014

The 4L80E is a very heavy-duty, four-speed automatic overdrive transmission. It is heavily based on the earlier three speed TH400 transmission. The 4L80E is a fully electronic transmission that uses electrical solenoids to shift the transmission and incorporates an electronic look-up torque converter. It uses a 2.48:1 ratio first gear and a 0.75:1 ratio overdrive gear.

This particular automatic transmission first went into use back in 1991 and remained in the GM lineup through the end of the 2006 model year. It could be found in also sorts of heavy GM vehicles, including the Chevrolet C/K pickup, the Suburban, the GMC Yukon, the Avalanche, and the Hummer H1. It could also be found in the heavy-duty versions of the full-size Chevrolet Express vans that made up the chassis of many shuttle buses.

Source: creativebussales.com

Chevy van-based shuttle buses come with the 4L80E transmission.

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How to Extend the Life of the 4T80 Transmission in Your Buick Lucerne

Posted by on Tuesday, July 29th, 2014

The 4T80 is a four-speed automatic transmission designed and built by General Motors. It is based on the older TH125 automatic transmission. The T480 was designed to be used exclusively with cars that incorporated V8 engines and used a front-wheel drive design. All engines used with this transmission were of the Cadillac Northstar family. It is a fairly heavy-duty transmission and was used in cars weighing as much as 8000 lbs. This transmission comes equipped with a 2.96:1 ratio first gear and a 0.68:1 overdrive gear.

The 4T80 first went into production back in 1994 and was in continuous use up through the end of the 2011 model year. The 4T80 automatic transmission could be found in many General Motor vehicles, including the Cadillac Deville, the Eldorado, the Seville, and DTS. In addition, it could be found in the Oldsmobile Aurora, the Pontiac Bonneville GXP and the Buick Lucerne.

The Buick Lucerne (Wiki)

The Buick Lucerne was available with the optional 4T80 automatic transmission.

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Performance Upgrades for the 6L80 Transmission in you Cadillac XLR-V

Posted by on Monday, July 28th, 2014

The 6L80 is a six-speed automatic transmission designed and built by General Motors. It was designed to replace the 4L60E and the 4L80E automatic transmissions. It was eventually replaced by the eight-speed 8L90 transmission. The 6L80 is a heavy-duty transmission designed to be used in vehicles with rear-wheel drive. It comes equipped with a very steep 4.027:1 ratio first gear and a very nice 0.66:1 overdrive gear.

It was first put into production in 2006 and can still be found in a number of GM cars today. It could be ordered in a variety of vehicles, including the Chevrolet Camaro, the Pontiac G8, the Cadillac STS-V, the Escalade, the Hummer H2, the Camaro (including the very powerful Camaro ZL1), and the Holden VF Commodore. It could also be found in the Cadillac XLR-V.

Cadillac (Wiki)

The Cadillac XLR-V came with the 6L80 automatic transmission.

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Prepare the AOD Transmission in Your Classic Saleen Mustang for Autocross

Posted by on Friday, July 25th, 2014

The AOD was Ford Motor Corporations very first overdrive automatic transmission.  It was designed to give Ford vehicles better gas mileage after the 1970’s oil embargos.  It took the place of the C4, C5 and light duty versions of the FMX transmission. When it was introduced in 1980, it remained in the Ford lineup for a very long time– finally being phased out of use at the end of the 1993 model year.  It was used in many Ford vehicles, including the LTD, the Thunderbird, the Econoline van, the Crown Victoria, the Bronco and the many versions of the F-series pickup trucks.  It was also used in the Saleen version of the Mustang.

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Don’t Let the ZF 8HP Transmission in Your Audi A5 Leave You Stranded

Posted by on Thursday, July 24th, 2014

The 8HP is an eight-speed automatic transmission built by the ZF Friedrichshafen Company. The 8HP comes in a number of varieties, including the 8HP30, the 8HP45, the 8HP55, the 8HP70 and the 8HP90. The weakest of the varieties, the 8HP30, can handle up to 300 N-m of torque. The strongest–the 8HP90– can handle an unbelievable 900 N-m of torque.  The 8HP was designed to replace the 6HP transmission–a six-speed automatic– mainly to obtain better gas mileage in the vehicles it was used in. This transmission first went into production in 2008 and remains in production today.  The 8HP has a very steep 4.69:1 ratio first gear (excellent for quick take-offs), and a very generous overdrive ratio of 0.66:1 (great for maximizing gas mileage). A different version of the 8HP can be found in a wide variety of vehicles, including the Audi A4, the Bentley Mulsanne, the BMW 3 series, the Chrysler 300, the Dodge Durango, the Jaguar XF, the Lancia Thema, and the stellar Audi A5.

 

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Put a Racing C4 Transmission in a Big Block 1973 Mach I Mustang

Posted by on Wednesday, July 23rd, 2014

The C4 is a medium duty 3-speed automatic transmission designed and built by Ford. It is designed for vehicles with the motor mount up front in a longitudinal position and rear wheel drive. Over the years there have been three basic designs of this transmission, with the variation being the number of spline on the input and output shafts. They are as follows: 1964 – 1969: 24 /24, 1970: 26 / 26 and 1971 – 1979: 26 / 25. This transmission first went into production back in 1964 and remained in the lineup all the way through 1979. The C4 was eventually replaced by the C5 transmission, which is really nothing more than a C4 with a lockup torque converter.  The C4 could be found in a wide variety of vehicles (with mostly straight 6 and small V8 engines), including the Bronco, the F-series, the Fairlane, the Fairmont, the Falcon, the Granada, the Ranchero, the Thunderbird and the Maverick.

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