Also they have a section in there for trouble shooting. So after everything was ok I went for about a 100 mile trip and normally I would be going about 3500-3600 RPM between 67-70. A Gear Vendors Under/Overdrive (GV U/O) actually turns that into six separate ratios with first, first-overdrive, second, second-overdrive, third, and third-overdrive (or just overdrive). When I finally get to restore my 70 Road Runner, I will put an overdrive in it since I am planning to drive it quite a bit, including highways. Our standard kit fits onto a powerglide with an aluminum case, and an 11 inch long stock tailhousing. BlueBaron762x39 said: The gear vendor is now installed. With 4.56 in Double OD it is 2.49 with our 4L65 transmissions. Temporarily install Gear Vendors overdrive unit onto the transmission adapter so that measurements can be taken for a new driveshaft. The LEDs and the enable/disable switch for the overdrive are mounted on the console plate. Without factory overdrive you absolutely need a GEAR VENDORS. Lansdale, PA. It was screaming. Bill supports the transmission with a screw jack to remove the mount and crossmember. You will have a vehicle which performs better, cruises with low noise and great mpg, has all the right gearing to take better car of the engine, and is just a pleasure to drive, with an overdrive that pays for itself. If you have 3.54, 3.73, or 4.10 diffs – you just have to have a Gear Vendors Under/Overdrive. 32 Install the gasket on the Gear Vendors overdrive unit. I just completed installing a Gear Vendors Overdrive into my 1931 Cadillac sedan. They installed an under/overdrive unit in the car. In most cases (as in ours) the installation is as simple as unbolting the rear output-shaft housing and bolting on the supplied Gear Vendors adapter in its place. I don't know if any one has tried the gears … Putting a 2.0 gear between First and Second is going to keep both torque multiplication and engine rpm high which means more hp getting to the rear wheels. RV and towing type instructions are also available. While the 66 Chevelle was out on the west coast it spent some time at the Gear Vendors shop. They do recommend frequent fluid changes and specify a GM synthetic gear lube. Rebel also install a Gear Vendors overdrive. Got my gear vendors unit installed on the car finally after sitting on the shelf in the shop for the last year. GEAR VENDORS did not invent overdrive or the original patents on our product. DeNormanville (maybe the most famous transmission designer ever) created the original product which, GKN (a 6 billion dollar/year public automotive conglomerate) acquired to produce this product for Ford and Volvo. Veteran Member. I'm getting very close to the first fluid change for mine. 70lt1z28. Using the GV unit’s 0.78:1 ratio “in between” each gear effectively shortens the jump between ratios and allows the engine to stay in a tighter RPM range. The 200-4R is 4.09:1, and 5.24:1 with a GV. 7/11/05 Drove from Yuma, AZ to El Cajon, CA for installation of Overdrive Kit at Gear Vendors Inc. 7/12/05 Installation of Overdrive Kit at Gear Vendors Inc. Again deleted bc of an unprofessional Vendor with an apparently slow schedule and oversized perception of his knowledge regarding hydraulic pumps and fluid dynamics. Check a thread on over drive gears by m-35tom he has produced a replacement 5th gear for the deuce along with a couple of other improvements for the stock tranny that will help with speed. It comes with an extension housing for the th400 like if you were going to bolt it to a transfer case. Here is a quote from the gear Vendors salesman. Beavercreek, Ohio, USA. I noticed the foot switch was mounted in a very awkward position – next to the brake pedal where, with a natural resting foot position would consistently hit the switch. The answer was simple; just add a Gear Vendors Under / Overdrive to the back of the transmission and pick up an instant 22-percent overdrive. I am VERY pleased. 4,756. Get Expert advice about your vehicle. Call us at 800-999-9555 GEAR VENDORS provides overdrive product to racing cars and trucks up to 2000hp and trucks towing heavy RV’s up to 25,000lbs gcvw. 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. A Gear Vendors overdrive gives the best of both worlds now.. 4.56 gears and a ratio that is actual a bit lower than 3.73 when the overdrive is engaged. Oct 21, 2007. The new factory six-speeds (6L45/50/80/90,) yield 6.04:1 - which is great, but these tranny's simply won't live without engine torque management, so this isn't a viable hotrodding option unless you get the tranny with the motor and all the interfacing electronics intact. The OD ratio of the GearVenders unit is .78:1 and you can engagement the OD of the unit in any gear of the manual transmission at full throttle. Oct 3, 1999. What would you expect with 95 HP in a 5000 lb car equipped with a 4:54 ratio rear? The master power switch is mounted in the console as is a USB port and 12V outlet for Bluetooth my Amazon Music and Sirus from my iPhone. Since there’s no changing of output shafts, you can simply unbolt the overdrive and adapter and return the vehicle to stock if you ever sell it. The holes in the GV tail there are blind and follow not useful all made way through empty the Mopar tailshaft does. These instructions are for cars and sport trucks with 3 speed automatic transmissions and the Gear Vendors Overdrive using our electronics package. for climbing hills and towing. We cover the install of the Gear Vendors Overdrive on the 1969 Camaro. 34 … Gold Member. With a 4 speed, it would bolt in replacing the trans tailshaft. Early February I answered an add here on TC for a Gear Vendors overdrive and made the commitment to buy. Next on the agenda is to start disassembly of what I have now. Just got a Powerstroke 7.3 with 166,000 miles on it and just bought a gear vendors unit with an adapter for a Borg Warner transfer case attached. The Gear Vendor Overdrive unit is on the transmission. Aug 15, 2020. It is a big unit the Gear Vendors over/underdrive unit. This gear vendors overdrive installation instructions say it, springs by with. Forgetting about price for a moment, my top choice based on what I had seen WAS the Gear Vendors overdrive (about $2900). After the GEAR VENDORS is installed in your vehicle you will have twice as many underdrive ratios as you do now (1st, 1st-over, 2nd & 2nd-over) plus an overdrive gear (3rd-over) suitable for towing. If you also have factory overdrive you will now have 3-overdrive gear choices. Warning – Always set your park brake when parked. Price on that kit is $2395.00. They are pricey new, but they're tough and can be installed behind many different transmissions. According to what I've read these units are built to handle 1200 horse power, more than two or possibly even three of our cars would deliver. Ingenious mechanism gives you a .78 overdrive that you can retrofit to just about any transmission on the market. I found it much easier installing when it was out of the car, just remember its Gonna be heavier, and man what a breeze it is to install / connect the G.V to your 727, comes with easy to read instructions, your gonna love your G.V, I run a 30' tire with 4:30 gear and cruse 80 mph @ 3000 RPM. For Motorhomes with factory overdrive the big gains are in the ability to climb hills with better splits in the ratios. Aside from fairly hard shifts, having those extra gears at your finger tips improves the trucks abilities Read about his installation here: Gears are multipliers of torque. 33 Measure for the new driveshaft. I think with 3.73 the Final Drive Ratio in OD is 2.61. 71 SS 454 TH400 2.74 1st gear GV Overdrive 3.55 Gear SC&C Stage 11 QA1's 4 Wheel Baer Brakes AGR Box Straub SR .630 .612 lift 240 256 dur@.050. After years of thinking about an overdrive and which one to get I opted for the Gear Vendor. Be sure to allow 5/8 of an inch clearance from base of the driveshaft yoke to back of Gear Vendors overdrive unit to prevent bottoming out. redid the exhaust to relocate the crossover pipe and i put cutouts in the car at the same time. Dec 31, 2014. After scrounging a couple of weeks for parts and pieces I'm about to install a Gear Vendors on the used '89 F250 2WD 7.3 IDI C6 with 4:10 rears and stock... in this thread in this sub-forum in the entire site. Jun 2, 2016. Steel Soldiers now has an offical calendar available, read more about it at: Steel Soldiers 2021 calendar Before, I felt like I was abusing the car at 50mph. If need to check shocks, vendors gear overdrive case to drive with the brink of us overdrives they can get the top light on. Then just call up Gear Vendors for an adapter for your new vehicle. The … 22-28% gains typical on all three speed automatics, plus all the other benefits of gear-splitting ratios etc. Since I don't have a 4x4 I will need to get an adapter for a E40D transmission. The ratios of the M23W that I used were: 2.568:1 - 1.908:1 - 1.366:1 - 1.00:1 for an even RPM drop through all 4 gears. #8. Only reason I wanted an Overdrive is when I am driving the car and going 55 or faster it's loud and I … Mar 14, 2012. We have a couple of ways to get a Gear Vendors unit onto the back of your powerglide. The guy was upgrading to a TKO600 tranny and when the TKO delivered to him he was to remove the GV from his '70 Chevelle Muncie and then ship it with driveshaft. The modifications required included notching the floor pan brace, shortening the drive shaft, and … In the end I will probably call them to confirm, but I'm leaning towards the recommendation in the install manual and going with the ATF. I was wondering if anyone has had any experience or has heard anything about one of those Gear Vendors overdrives?I was thinking of installing one behind my 79 k5 , but wouldn't it make my driveshaft angle in the back too steep?My combination will be a350/th400/d60 /14bolt ff 4.56 gears/np205 . After installing I ran 2800-2900RPMs at 67-70. had to gently dimple the tranny tunnel a little to clearance two spots on the GV unit. I always had a TH-400 in the car and I always liked it. The second way is our Shorty Glide kit. Gear Vendors has a section in the book on what to look for on your first test drive. The Gear Vendors unit offers a .78 to 1 (22 percent) overdrive ratio, and that will effectively reduce fuel consumption, engine rpm, and, oh … We decided to give the 700R4 and Gear Vendors combo a try to see if we can get a better gear range for autocross use. And then the gear vendors bolts into that. It's a 70 Chevelle SS with a 454, TH400 transmission and a narrowed for 9" rear. We're installing the Gear Vendors overdrive in a Top Loader four-speed car. I took a few picture of it while under the truck recently..

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