Through the years we have worked with Ford, GM, and Chrysler and our products have come factory on everything from one of Americas fastest production cars (GM’s TwinTurbo Callaway Corvette) to Americas largest RV manufacturer (Fleetwood Motorhomes). Only the import cars with manual transmissions had an overdrive gear.
When GEAR VENDORS first started producing the DeNormanville planetary overdrive in 1979 there were no American vehicles with overdrive. OEM means that new vehicles have come factory equipped with GEAR VENDORS as original equipment. Whether your interest is motorsport or recreation — you cannot buy a more proven product. This is a great benefit at the track or on the highway. At the same time this ratio splitting makes less work for the main transmission in the vehicle to then advance to the next gear (less ratio change) and thus the main transmission itself becomes more reliable. And then shift to an overdrive final and reduce both rpm and torque to reduce the manufacture of HP when steady cruising to improve fuel mileage and decrease wear on the engine and engine driven accessories.Ģ world records in Drag Racing, 4 Off Road Racing Titles, and several Land Speed records all benefit from GEAR VENDORS ratio splitting performance. This also means engine rpm drops about half what it did without the GEAR VENDORS and so rpm is sustained – higher torque and rpm on shift = more HP. Gears are multipliers of torque and our Ratio Splitting capability allows you to shift to a gear with more mechanical advantage than the next stock gear in automatic transmissions and wide ratio manuals. GEAR VENDORS is one of few products that can work both sides of this equation for real performance gains as well as consistent fuel consumption reductions. Torque (times) RPM (divided by 5252) = Horsepower (this can be expressed) Tq X RPM / 5252 = HP. For an in-depth discussion on which vehicles can expect these mileage gains see our “common questions” section on the web site. In the long run it just doesn’t cost you anything to own a GEAR VENDORS UNDER/OVERDRIVEâ„¢. That makes the driving pleasure of overdrive, and performance improvements free — and then the vehicle is also worth more when/if you ever sell it with the GEAR VENDORS. With fuel costs high the overdrive can pay for itself in mileage and engine wear reductions. Add the benefits of a final overdrive ratio to reduce engine rpm and increase fuel mileage by typically 20-28% and you have a product that is the single biggest innovation you can bolt to your car or truck.
Whether you are trying to move a couple tons up a steep incline or moving just a couple thousand down the track — the fastest way is with the right gearing. GEAR VENDORS provides overdrive product to racing cars and trucks up to 2000hp and trucks towing heavy RV’s up to 25,000lbs gcvw.
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