But one of the winners of the Help Break The Code contest provided a missing link. If you look down into the hub, the top set of gear splines are When he first started, he knew the clutch apply strategy would point him to the correct friction material to use on some converters, but other converters could use any one of the three. groove did, in fact, have metric threads. These converters feature silicon brazing for strength, needle bearings for reliability, and stator modifications for more torque multiplication. In other words, you want the torque converter to slip until RPM reaches the 2,400- to 2,600-rpm range. 1952-59 Ford Social Group. Serial Number___________________________________________________ + -. drive a quill shaft for an auxiliary pump, etc. How Much Does It Cost To Replace An Alternator? use a removable input guide. For the most up-to-date The e-mail address that you entered is either incorrect or invalid. Only Carbon clutch Engineering Book Store It is best to have the torque converter out of the equipment, Engineering Calculators Engineering Forum thats what i was looking for. This TH350/TH400 torque converter has a stall speed of 2000-2300 RPM and 500 horsepower to keep your vehicle running fast and smooth. Check the Fit, Estimated USA Ship Date: there a ring gear welded to the bottom steel cover? Remanufactured Transmissions, Remanufactured Torque Converters, Remanufactured Engines, Overhaul Kits, and Aftermarket Replacement Check the recent customer reviews of the part to get an idea of the quality of the product. At the right rear of the case is the modulator. Applications and Design 4.5 out of 5 stars decoding process. 1st Digit (application trans) B -- THM250C, THM350C C -- 200C, 2004R, Pre-1984 1/2: 325-4L & 700r4 D -- 1984 1/2-up 700r4, 4L60, 4L60-E If your transmission is not shifting properly, you need to check the TV cable adjustment, as discussed before. 1996-up converters are built to be compatible with GM's PWM TCC apply strategy pitch. of the stator. They can be U.S. standard or metric. The information Gary has gleaned about the TH400-style converters may well apply to other converter styles since GM tends to stick with processes once developed. Proud to be 100% Employee Owned and Operated. email. Flats - two flat areas machined into the sides of the . I have included a video to simplify the procedure of the TV cable adjustment. Used and quality-inspected parts are sold as-is with no warranty. With superior quality guaranteed, this Recon torque . Today Identify Hub Type | Contact, Home Standard splines are not hardened and can not handle the added power of a higher performance engine. That's simply telling you the stall speed. the hub have two ears, splines or gear teeth? However, I have heard that these How It also acts as the friction surface on lock up units. carbon filled clutch TC's on earlier trannys and the only experience I have Copyright 2023 by AUTOSALES, INCORPORATED Torque converters with stamped stators are known. torque converters should be used in 1996-97 trannys. ok first off. 2nd Digit (approx stall, depends on engine). Our Most Popular Torque Converters 4L60E/4L65E/4L70E Torque Converter AODE/4R70/4R75 Torque Converter 4L80E/4L85E Torque Converter E4OD/4R100 Torque Converter A518/A618/48RE Torque Converter 5R55N/W/S Torque Converter Honda 116 Tooth to 121 Tooth Ring Gear Torque Converter 6L45/6L50/6L80/6L90 Torque Converter Resources: Rated converter stall speeds vary due to engine size, engine torque output characteristics, vehicle weight, camshaft, and other factors. Torque Equivalents - Conversion Calculator. Engines that produce more low-end torque cause a given converter to stall at a higher rpm. Friction Formulas Apps An impeller that has not been in an oven will be straight across between the dimples (see. The outer blades of the turbine receive the fluid force of the impeller. External balance, but i dont know if that weight package is for a cast crank, or for a steel crank/heavy rod combo. But you can be sure that all of the converters that do not dip between the dimples will not be furnace-brazed. Count the located on the converter body to help identify it. The TH350 weighs 120 lbs. what are they? Straps metal straps that are riveted to the bottom of Note the mounting Actual stall speed may differ due to engine combination, gear selection, and vehicle weight. The stock unit has vane geometry that increases stall and lowers fluid velocity. In 1991, the 700r4 transmission was replaced by the popular 4L60 transmission. The only true way you'll know for sure is to have it cut open and see what has or has not been done inside. E-mail us at: corebuyers@transtar1.com or call Jim Valenza at 931-545-4010. A727 uses a torque converter with an internal clutch. The safest way to determine if you have a 700r4 transmission is to look at the identification tag on the transmission. I'd like to know if this is internal balance or not. that youll need to easier to identify, and less likely youll make an identification error, if The second number was 4742 and it was found on converters with a FYHB code on the I.D. drive splines in the very bottom of the front cover that may You are using an out of date browser. This information should be used as a guide Engineering Standards only. Free Shipping; $302.95. A worn-out TV cable or a faulty adjustment is another common issue on the 700r4 transmission. Hub - the portion of the converter that is inserted into Pressure Vessel _______________________________________________________________, 10.Additional Information or If you have any questions, comments, or suggestions, please give us an Try to get as much information as possible about it, like the mileage, how many transmission fluid replacements were done, etc. __________________________________________, 5. Manage Settings Your value gets instantly converted to all other units on the page. If you have a mechanical speedometer Check if you can see any problems with the speedometer cable. Is thread size and pitch. torque converters: Identify Vehicle and Remove Converter there a ring gear welded to the bottom steel cover? 1-800-790-0039 This is a converter look-up chart. Summit Racing will BEAT any competitor's advertised price! The AOD's efficiency means the difference between 2,500 rpm at 70 mph and 2,000 rpm at 70. letter stamped between the dimples of the impeller on the converter body. Please note that Checkout Prices will be in US Dollars. This is a custom order part. _______________________ If your torque converter is a ____________________, 8. I hope this helps. This torque converter is for use with Chevrolet flexplates only. ring or a sealing ring. witnessed with them is they apply firmer. Continue with Recommended Cookies. The transmission then became electronically controlled instead of using a TV cable, along with some other changes that I will go through further down in the article. 800 945-7644 customerservice@protorquetools.com. Hardware, Metric, ISO | The TH350-C was the lockup torque converter version introduced in . 2.Transtar does not publish an industry part number interchange, but you can It is important to have hardened turbine splines to prevent the splines from stripping out. You should do this before going into any more specific repairs. Now with that being said, DTT also uses a blue . Studs threaded studs welded on the bottom of the Stall speed 3000? It has a distinctive oil pan that is chamfered at the passenger side, rear corner. The Fora platform includes forum software by XenForo. This calculator is designed to convert between torque units. The DNA section can help track down the cause of a torque converter failure and prevent repeat failures. Use commas to separate multiple addresses. If you can see any signs of wear or damage on the TV cable, replace it! When accelerating, the torque converter transfers increased torque to the transmission. I have personally used the Here I will give some common symptoms of a bad 700r4 transmission, and add a short line underneath it to explain where you should start looking for the issue. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Note how many stator and turbine splines. the hub. Vibration Engineering A forum community dedicated to GMC and Chevy full size owners and enthusiasts. Ring Gear gear toothed metal ring welded to the outer 2. I also dont know if cast crank weights are the same for big and small blocks. 8,162,612, hereby incorporated by reference. If you have found a severe problem with your 700r4 transmission, you might want to replace the whole transmission. One example is shown in commonly-assigned U.S. Pat. which are at the end of this section. Converter stall speed must be high enough to put the engine into the torque range where it can most efficiently launch the car. 1. dba Summit Racing Equipment | Trademarks, Everything You Need for Anything You Drive. For a better experience, please enable JavaScript in your browser before proceeding. Copyright 2023 Mechanic Base. Fins - metal ribbing on the exterior of the converter Many of you submitted valuable tips to us, which were reviewed and tested for accuracy by the Torque Converter Rebuilders Association Board of Directors. No. many total holes, including the ones being used, are there Often, the The hammer strikes the converter between the two dimples, on the middle row of dimples, on the impeller side of the converter (see. While Sonnax makes every effort to ensure the accuracy of technical articles at time of publication, we assume no liability for inaccuracies or for information which may become outdated or obsolete over time. Based on the weight sizes given, the converter application is for a 1973 to 1976, 400, 440 engine with a cast/forged crank. The K-case is more robust and has a thicker transfer case. There could be a problem with the converter itself, which may need to get replaced. OE manufacturers are furnace-brazing more of their converters to meet increasing torque load demand, and its critical to be able to identify them. It's been painted, so at one time it's been apart, so was it taken apart to be re-stalled, or was it just a stock rebuild. The 1st and 2nd gears got a lower gear ratio, and the transmission case itself became a bit longer and larger. Raise the car and look at the transmissions rear. Another cause could be the TV cable adjustment, which I will discuss further down in the article. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Materials and Specifications Have A large cubic-inch engine will raise a given converter's stall speed. Electric Motor Alternators . He has been working as a car mechanic for over 10 years, and the majority of them specialized in advanced car diagnostics and troubleshooting. Pre-War Hotrods only!!! If the fluid seems okay, its time to check your TV cables adjustment between the transmission and the throttle body. Gears Design Engineering Physics Our mission is to inform our customers to the advantages of using a performance torque converter over factory or OEM units. system to cover as many converters as possible. The 700r4 transmissions sometimes leak, which can cause low transmission fluid levels, so you should always check the level first to ensure its fine. 1. on the converter? converter. Design & Manufacturability This information should be used as a Below is a guide to help decipher it's meaning. Type___________________________________________________________ Fluids Flow Engineering I work on other peoples vehicles for a living. ATI's line of Outlaw drag race torque converters are designed to meet the high horsepower demands of heads up style drag racing. Are Codes on a torque converter can come in many forms. At each upshift, engine rpm should drop off to the point where the engine makes good power. Factory stall speed 1800-2100, 11" diameter, wide ring gear. The downside was, if the converter was not identified properly, it might take several days before the core was returned and cut for proper identification. The last numbers and letters indicate the manufacturer, rebuild, manufacturing, and serial number. Strength of Materials Our unmatched 5-step remanufacturing process combines the precision of computers with the experience of engineers to ensure consistently high quality is achieved. Whats the four digit Next to the 11" it looks like numbers stamped into it. The weights measure 1 3/8 3/4 1/4. We also have common abbreviations and an easy-to-use conversion table available. looking down through the converter hub and into the center The factory drive hub tends to wear and crack after years of use. fins, dowels or ring gear. Really. As the turbine reaches the same speed, the stator begins to turn clockwise allowing fluid to easily pass into the impeller. They can be a sticker, For example, if the number is 0, the transmission is from 1990. Talk to your Transtar sales rep to make sure you are getting the It weighs 133 pounds without transmission fluid. Well, the 700r4 uses a TV cable as the speedometer, and the 4L60 is an electronically controlled transmission, so if you see wires coming to the transmission on the rear of the transmission on the passenger side, you have a 4L60. There are two different variants: either a combined switch with the brake switch and cruise control switch, or several separate switches. GM Cars - GMC, Chevy/Chevrolet, Buick 1982-1990. These issues include: There is a switch on the brake pedal, and you should check to make sure it is functioning properly. Estimated Ship Date: Tomorrow. This assembly is what mechanically links the turbine to the front cover. The system is still in use today and is living proof that the better informed the customer is, the fewer problems you have. How Much Does It Cost To Change Transmission Fluid? bolted torque converters requires some additional questions If you find a speedometer sensor instead, you have an electronic speedometer. PCM is actually making the TCC slip during apply. These custom race-style torque converters can be used with 30-spline turbo shafts, Lenco C-6 spline or 1-1/4-29 spline and the ATI Superglide 4 shaft. tag. You never know what you're going to find. Thermodynamics The turbine is what drives the transmission input shaft. A heavy car with a "tall" (low numerical) rear axle ratio will have a higher effective stall rpm compared to a light car with "short" (high numerical) gear ratios. A heavy car with large diameter tires will raise effective stall speed as installed in the vehicle. The population of bolted style converters is declining. If you find that the transmission fluid looks dark red, brown, or even black, its time to replace it and flush your transmission. size. 2801539 A727A 67-68 Belvedere, Charger, Coronet, Fury, Polara, Monaco w/ 318 + HD transmission or trailer package. Equation $$\tau_{Nm} = 1.355818\tau_{ft-lb}$$ Where: Nm = torque in Newton-meters. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. correct part on your order. 1. This is the part that connects to the engine via the flywheel. JavaScript is disabled. If the problem persists, there might be a problem with your instrument cluster. Threads & Torque Calcs A lot of people like the 700r4 because of its excellent durability. Please consult your local dealership or transmission ready to start identifying your torque converter.

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