This is a retrofit gear to allow the speedometer to function with 3. Since the gear tooth pitch is slightly different than OE, the service life of this gear is limited to less than 20miles.
Most cars with low rear end ratios will take a tooth drive gear. The drive gear is part of the governor assembly which is located inside the oil pan. The gear can be replaced separately by removing the retainer clip on the governor shaft. R Billet Aluminum speedometer driven gear housing with new o-ring seal, lip seal, retainer and retaining bolt.
After changing rear end gears or tire diameter you will likely need to swap one or both speedometer gears to keep the speedometer reading correct. Speedometer Gear Chart 200-4R. To determine which speedometer gears are neede you need to know two things, tire diameter and rear end gear ratio.
The number on the driven gear housing must match the number of teeth on the driven gear.
I had a speedometer gear issue. I got either the wrong gear or a bad gear but Monster handled it okay. Includes billet aluminum gear sleeve, teeth gear , and housing retainer. Better than OE quality in fitment and longer lasting.
And you have to modify it more to get the equivalent strength of a 700R4. For example a tooth (green) drive gear is $at some places. With tooth driven and 2. And according to that calculator, with 3. I need a tooth driven gear. California Performance Transmission has the answer. Simply screw our inline adapter into the transmissions speedo drive and your speedometer cable to the back of the adapter.
As time progresses they can get stuck in there tight and you can damage the threads on the outside of the speedometer cable housing. Call today for the right gear for your application. All gears are subject to availability and may not be in stock. We machine these from a solid piece of aluminum rod and the speedometer sleeve comes complete with the speedometer gear seal, o-ring, hold down clamp and bolt.
Monster Transmission Builder Nate shows how to change a speedometer gear in a 200-4R governor. Make sure to keep in upright to avoid the rod falling out and everything falling apart. Certain vehicle specific tail-housings may not be available with this unit. This housing includes new seals and o-rings.
A description of the speedometer drive and driven gears, as well as the governor in a Turbo 200-4R automatic transmission. Includes outer oring, inside rubber gear seal and spring retainer clip to stop leaking at your speedometer housing. It will stop the leak where the speedo cable.
R Street Smart System Transmission. R a great unit for vehicles under 4horsepower. Read the tech article on a TH200-4R Transmission Swap - Tech Article, brought to you by the experts at Chevy High Performance Magazine. The real reason for choosing a 200-4R is. All of our Level high performance 200-4R transmissions come with a performance Transgo Shift Kit installed and a heat treated sun gear shell.
After you enter your vehicles tire size (using either a measured tire height or entering your tires P-Metric information) plus your vehicles rear end ratio, this calculator will display a chart indicating the speedometer gear set combination needed for an accurate speedometer reading in your vehicle. The overdrive gear on the 200-4R is also more aggressive(.vs.70), which allows the engine to turn slower down the highway. Is the 200-4R computer controlled?
Can I use my old speedometer cable? The 200-4R utilized a mechanical speedometer for its entire production run. So, you should have no issue using it with an old. As we all know that changing tire size will make your speedometer inaccurate. PATC GM Performance Transmissions, TH40 TH35 700R 4L60E, 4L80E, 6L80E, 200-4R and others.
PATC builds GM performance transmissions in many levels. The speedo gear combination for a 2. From the data that you specifie our calculator has come up with a set of speedometer gears that will give a correct MPH reading on your gauge. Looking in the chart, I find the closest match (using a small drive gear and tailhousing) is an 8-tooth tailshaft gear and a 24-tooth speedometer drive gear. Send us a message through Ebay and we will respond ASAP.
PST (West Coast USA) FREE U. Therefore you change the driven gear. Using the stock tooth drive gear with a tooth driven gear will get me pretty close, off by about mph at mph. This might even fit some of the Front wheel drive Vcars like the Oldsmobile Toronado with the TH3as well.
We are famous for the transmissions we have built for the Buick Grand National. Second- gear ratio comparo is 1. The driven gear is the one which is driven by the drive gear , and is connected to the speedometer cable or electronic sender. The program will compute the best driven gear given a particular drive gear , or the best drive gear given the driven gear value.
Used with early electronic speedometer pickup. Any gear housing from a mechanical speedo 700rshould fit. Or you could use a gear housing from a th3with a BOP case (Buick, Olds, Pontiac). If you used this combination in the 3. Use the speedometer calculater from TCI or Bowtie overdrives website to calculate wish gears you need.
A list of North American vehicle automatic transmission gear ratios. Enter your tire size Tire diameter may vary slightly depending on the manufacturer. This Item Ships for FREE in the USA.
The fourth gear allows the engine it is installed behind to rotate at lower RPM than a three-speed transmission, and this not only will save on gas and engine wear, but it also allows you to change to larger rear axle ratios without severely impacting streetability.
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