DODGE 3-Speed Automatic Truck/Motorhome
If you are driving a Dodge Truck with a TorqueFlite 727 there is no reason not
to get the Gear Vendors Under/Overdrive kit. It will pay for itself in fuel mileage, engine wear,
and resale value let alone your daily enjoyment which is substantial. The very first day you drive
the truck it is just a whole different vehicle. Lower engine noise from the 28.6% faster gearing.
Fuel mileage jumps 22-28% and engine wear is significantly reduced with the same number of rpm's
that currently take you just 500 miles now taking you 650.
With the GEAR VENDORS dashswitch in "auto" you will have automatic overdrive just like
the vehicle came with a factory overdrive system. The GEAR VENDORS will shift on and off
without attention of the drive and can be used while towing up to combined weights of 25,000 lbs.
An interactive floorswitch is positioned for the left foot (just like a headlight dimmer) to give
manual control at any moment so that your can turn the overdrive on/off for performance and gear
splitting while red and green lights in the dash keep you informed on the overdrive operation.
Performance while accelerating or climbing grades is greatly improved by the availability of 6
forward ratios (see Final Drive Ratios). With approximately ½ the drop in engine rpm on each
gear change and the ability to downshift at ½ gear intervals (much sooner than with the stock
only transmission) performance gains of over 40+ horsepower and 60lb ft. of torque are typically
minimum, see Final Drive Ratios.
Most importantly you are getting this horsepower and torque without modification
in any way to the engine. Any other way of increasing power (chips, induction, exhaust, fuel) all
put stress beyond the original equipment. With the GEAR VENDORS UNDER/OVERDRIVE™ you get
this power because gears are multipliers of torque, plus the engine can be kept in a narrower
(better performing) rpm range when power is needed. For this reason, if you do have performance
modifications the GEAR VENDORS also helps them work to their maximum potential. No only
do you get performance without engine modification but the overdrive will pay for itself in fuel
mileage alone. Add to this the savings in wear you get from slowing the engine down, how much
nicer and quieter it is in the truck while cruising and you start to understand that it really
doesn't cost anything in the long run to own the Gear Vendors. If and when you decide to trade
off the vehicle you will find that a used torqueflite kit on ebay command over 50% of its original
cost or take it with you to the new truck by using our factory exchange program.
The GEAR VENDORS UNDER/OVERDRIVE™ will do more for this vehicle than
any Underdrive or Overdrive on the market. You will get all the features normally associated with
an underdrive except a gear below first, plus all the economy of overdrive. Because
GEAR VENDORS is the only product you can shift under throttle you will have far greater
performance and economy. The GEAR VENDORS comes with the best warranties in the industry
(2years for noncommercial use) including a 30 day money back guarantee so you know you are
going to be happy with everything abut how this kit installs and drives (see Warranty for
details). There is no room here to discuss the countless situations where additional gears
and torque multiplication help your vehicle perform. Look at the Final Drive Ratios and then
call and get one, you will wonder how you ever got along without it.
DODGE 3-Speed Automatic Muscle Car/Street Rod/Restoration
If you own a car with a TorqueFlite 727 or 904 3speed auto - you own one
of the best transmissions ever built. We have race teams that use the Gear Vendors behind
these transmissions in vehicles that are not even Chrysler based vehicles (the transmissions are
that good). By adding the Gear Vendors you get to keep this great trans and add overdrive
and performance gear-splitting ratios to it. You will then have a 6 speed Semi-Automatic
that is just the best performing, most durable transmission package out there with huge
increases in fuel mileage (typically 22-28%) and performance and fun while driving that
you have never had in the vehicle.
Gear Vendors reputation is all about performance and handling horsepower
reliably. This is why you have seen GEAR VENDORS in 8 second ¼ mile cars in publications
like Hot Rod and National Dragster. This is also why all GM Callaway Corvettes with automatics
came with a TH400 and GEAR VENDORS instead of the base Corvette 4-speed auto, as did
all the newer Jensen Interceptors with a TF727. If you're running more than 1200 horsepower
(and we have customers that are) then talk to us at the factory as there are some hydraulic
changes we do for vehicles up to 2000hp.
Horsepower aside, there are several other reasons you will prefer a GEAR VENDORS to
any factory overdrive automatic or manual. You will have a dashswitch that allows both manual
and automatic operation. With the switch in "auto" the vehicle will act just like it came from
the factory with overdrive. The overdrive will kick in at 47mph or whatever the eprom is set
for in our electronics and turn back off at slower speeds without attention of the driver. The
ratio is .78 to 1 (see Final Drive Ratios). This equates to 28% faster vehicle speed at the
same rpm or take your existing rear gear multiplied by .78 (ie 4.10 X .78 = 3.20). In this
example a vehicle with a 4.10 behaves just like it had 3.20s when the overdrive is engaged.
This is just the right amount of overdrive as any taller would require a lockup converter or
create excessive converter slippage. With the .78 to 1 ratio you're good with any torque
converter you choose for high performance street/strip use.
Another awesome feature of the GEAR VENDORS is that you will have
a full 6 forward ratios when you switch to manual on the dashswitch. Pull into low, then
hit our button (on the shifter or the floor), a red light appears indicating our Auto-Launch
circuit - accelerate between 1st (2.45) and 2nd (1.45) and has a whole bunch more torque
multiplication than you have ever felt in your car before. With a 3.55 rear for example the
torque multiplication in 1st-over is more than 4.56 diff car would have in 2nd - awesome
performance gains. After you have revved up in 1st-over then shift to 2nd and turn us off.
Then rev back up and hit the button for 2nd-over for the same benefit (that 3.55 example
now get a 4.01 gear). Then 3rd and 3rd-over (the 3.55 in 3rd over is turning like it had
a 2.77 diff now hence the trademark Under/Overdrive.
Because of all the performance improvements, if you were thinking of
going to a stouter rear gear (higher numerically), wait until after you have driven with
these new ratios and you may find you are in love with the performance without a ratio
change at all. The performance and sound of the motor is tremendous as it goes through
6 full throttle close ratio shifts. You are in each gear ½ the time you are now so the
car is not only faster but it also feels and sounds much faster.
With a 2year unlimited horsepower, abuse, or mileage warranty and a
30 day money-back guarantee - you are guaranteed you will be happy with everything about
how this kit installs and drives in your muscle car, street rod, or restoration project.
See Magazine Articles for some of the baddest mopars of all time that run a Gear Vendors
6 speed.
DODGE/DODGE RAM FINAL DRIVE RATIOS
Find your transmission and rear gear multiplier below. The Final Drive Ratio shows you how many
times the engine turns for one complete turn of the tires. This Final Drive number is also your
torque multiplier when in that gear. GEAR VENDORS reputation for being the best is because
of its sophisticated planetary construction. This means GEAR VENDORS is the only auxiliary
intended as a GearSplitter 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 the accelerator or is not intended to shift frequently is not going to
give you this performance.
There is not room here to cover all the details so call the factory to discuss
the full benefits demonstrated on these charts.
| TORQUEFLITE A-727 3-SPEED AUTOMATIC |
| |
|
Axle Ratio |
| |
|
4.56 |
4.10 |
3.73 |
3.55 |
3.23 |
3.08 |
| |
Trans Ratio |
Final Drive Ratio |
| 1st |
2.45 |
11.17 |
10.05 |
9.14 |
8.70 |
7.91 |
7.55 |
| Over |
1.91 |
8.71 |
7.84 |
7.13 |
6.78 |
6.17 |
5.89 |
| 2nd |
1.45 |
6.61 |
5.95 |
5.41 |
5.15 |
4.68 |
4.47 |
| Over |
1.13 |
5.16 |
4.64 |
4.22 |
4.01 |
3.65 |
3.49 |
| 3rd |
1.00 |
4.56 |
4.10 |
3.73 |
3.55 |
3.23 |
3.08 |
| Over |
0.78 |
3.56 |
3.20 |
2.91 |
2.77 |
2.52 |
2.40 |
Call or e-mail the factory to find out all the options available in your perfomance
application. 1-800-999-9555
DODGE 3-Speed Automatic Application Guide
GEAR VENDORS, INC. 1717 North Magnolia Avenue, El Cajon, CA 92020
Toll Free 800-999-9555 • Telephone (619) 562-0060 • Fax (619) 562-1186
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