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Overdrive Unit, Ford 4 Speed E40D & 4R100 Auto
YOU WANT A GEAR VENDOR YOU GET ALL THESE BENEFITS & MORE |
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| Ford 4 Speed Automatic Truck/Motorhome | Ford E4OD/4R100 4 Speed Automatic Application Chart & Pricing | |
| Ford E4OD/4R100 4 Speed Automatic Final Drive Ratio | Ford Horsepower and Torque Curves |
FORD 4-Speed
Automatics Cars/Trucks/Motorhomes
There are two basic Ford 4-Speed automatics: The light duty AOD found mainly
in half ton or lower applications, and the heavy duty E40D in the heavy 1/2 plus
all 3/4 and 1 ton trucks and motorhomes. AOD’s have a low first gear which is good
for initial take off but this makes the transmission have very wide ratio changes.
The intention by the designers was the best possible EPA mileage ratings, not performance.
The Gear Vendors will give you Gear Splitting to fix those wide ratios with a gear between each of them for tremendous gains in performance. This is a custom application which requires a four wheel drive extension housing. We can work with the lockup torque converters on all the later models which are electronically controlled or on the early models if they are no longer using the lockup.
The Gear Vendors also gives you an important overdrive gear that is between the really tall factory ratio and Drive (3rd). This gear will give you 11% more torque multiplication and lower transmission temperatures by as much as 100 degrees when compared to factory overdrive. Double overdrive is also available when conditions are right (very fast).
E40D’s used in motorhomes and trucks have a .71 overdrive ratio which is very tall. This transmission was designed to give the best EPA mileage rating, not for performance. Consequently you should often be wishing for a gear between 3rd and overdrive (4th) when towing. The Gear Vendors will not lock and unlock repeatedly (hunt) and will also reduce temperatures in the main transmission as much as 100 degrees on warm days. Consequently all our customers tow in the GV ratio and greatly extend the life of the trans.
Trucks running empty can make use of double overdrive for great economy and extended engine life. Motorhomes present too large a frontal area to the oncoming wind to make double overdrive practical but because they are always loaded they greatly need the Gear Splitting and alternative Overdrive features of the Gear Vendors.
Gear Splitting is the feature that allows the UNDER/OVERDRIVE to shift between the gears. You will now have approximately 1/2 the drop of engine rpm from one gear to the next when you want power. This is why a Gear Vendors will give you more power than any underdrive or overdrive on the market (see common questions). By keeping torque multiplication higher and engine rpm narrower you increase engine performance by typically more then 40hp and 60lb ft. of torque without any modifications to the engine (see Final Drive Ratio charts and Horsepower and Torque curves in this section) (see also common questions on performance modifications).
This is why big trucks ( Kenworths etc.) use gears (most 18 wheelers have 15 to 21 gears) instead of modifications. Because gearing gives them performance which actually improves the reliability of the engine. The heavier you are loaded the more you need a Gear Vendors.
If you already have engine modifications ( chips, exhaust, fuel increases, etc.) the Gear Vendors will let you get the most from them through working in narrower rpm ranges when loaded and also by adding torque multiplication the GEAR VENDORS makes it easier on the engine and transmission to propel the vehicle.
The GEAR VENDORS comes with a 2-year unlimited mileage warranty (on non commercial applications). The Gear Vendors is the only after market performance device or auxiliary transmission that comes as original factory equipment on new cars, trucks, vans or motorhomes. Over 1 million in the 80’s and 90’s were installed by manufacturers on vehicles; i.e.; Ford Diesel Transit Vans (European market), Volvo gas and diesel, Fleetwood, Allegro, Rexhall, Monoco and others motorhomes and GM’s Twin Turbo Callaway Corvette.
If you’re vehicle is heavily loaded or you just love performance the Gear Vendors is the ultimate option. Call our customer service line @ (800) 216-1632.
Find you transmission and rear gear multipliers below. The Final Drive Ratio shows you how many times the engine turns for one complete turn of tires. This Final Drive number is also your torque multiplier when in that gear. Gear Vendors reputation for being to best is because of its sophisticated planetary construction. This means Gear Vendors is the only auxiliary intended as a gear splitter behind automatics and the nicest to work behind both automatics and manuals. You are able to shift half gears that keep the engine in the power. Any auxiliary that requires you to let off of the accelerator or is not intended to shift frequently is not going to give you this performance.
Check out the unlimited horsepower warranty and money back guarantee and the simple installation in the dimensions section. Then order give us a call..
In addition to the overdrive units, we also provide an impressive
list of automotive after market products for car, pickup truck, SUV and 4wd repair
parts and accessories that includes rear
end covers, ring and pinion
gears, OE clutches and heavy duty performance
clutches, diesel gauge kits, exhaust brakes,
re manufactured manual
and automatic transmissions
and both manual
and automatic
overhaul kits. Other products we offer for the RV recreational vehicle market include
REMCO drivelinedisconnects,
tow bar and baseplates and
positraction units to improve vehicle performance and save fuel. We have a complete
4 wheeling drivetrain product
line including complete differential assemblies, limited
slip and other solid
locking positractions. We offer transmission conversion
kits including the NV4500
and NV5600 as well as replacement
kits for light duty GM and Jeep transmissions. You may be interested in visiting
our Ford and Powerstroke Diesel
page, Dodge Ram and
Jeep pages for detailed
information.
Watch for future additions of new products to be added to our on-line catalog including advanced wheels, tires, engine tune-up kits and other accessories.
Need more information call 1-800-216-1632 talk
to a knowledgeable technician.
From time to time we offer specials discounts
to our registered Internet customers, click below to register and receive advance
notice of new products, special bonus offers and to be eligible for our free random
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Drivetrain Specialists of Las Vegas
Las Vegas NV, 89102
