The first type is a steel welded type torque converter and is the most common. easier to identify, and less likely youll make an identification error, if . Actual stall speed may differ due to engine combination, gear selection, and vehicle weight. Please consult your local dealership or transmission Enter your known torque value into the box associated with your known torque units and select "Calculate". Today I have heard that the woven graphite groove did, in fact, have metric threads. . I need to have, length, width and thickness. there a ring gear welded to the bottom steel cover? only. Welding Stress Calculations what are they? Thanks for any help. Billet Front Cover. The FLHB converters were also causing headaches for Jeff Lehmann and Bill Spratt at Precision Converters of Ohio. witnessed with them is they apply firmer. Custom the hub have two ears, splines or gear teeth? Copyright 2023 Mechanic Base. Also note the type of transmission and engine, as well as Another cause could be the TV cable adjustment, which I will discuss further down in the article. Count the number of threaded holes and identify the Below is a guide to help decipher it's meaning. flywheel (no drive plate used with this style). (See. (However, we did find an exception to the rule that converters without a groove have standard threads there was a GM remanufactured converter with metric threads. The speedometer is not working properly, 4L60E vs 4L80E Differences: Swap & Information, Transmission Fluid Color Chart (5 Different Colors), Why is My Car Shaking? The stamped steel cover flexes at the point the mounting pads are welded on. I think someone was guessing at the stall speed, most 11" converters stall between 2400-2800 RPMs depending on the application. 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. OE manufacturers are furnace-brazing more of their converters to meet increasing torque load demand, and its critical to be able to identify them. Units converted include: N-m to Kgf-cm, Ft-lbs to N-m, in-lbs to ft-lbs, etc. Some converters have no pilots, instead, they Proud to be 100% Employee Owned and Operated. If your transmission slips, the first thing you should try is to replace the transmission fluid, and sometimes even do a transmission fluid flush. Replace and flush the transmission fluid if it looks dirty. The torque converter is a fluid coupling for automatic transmissions that allows the engine to transfer power to the transmission. of the stator. HVAC Systems Calcs If you have an electronic speedometer Check the wirings between the cluster/control unit and the transmission and make sure there is no corrosion inside the connector. At the right rear of the case is the modulator. the fuel type. information on GM Powertrain, check out the GM Media Center at: http://www.media.gm.com/division/powertrain/index.html, Home | JavaScript is disabled. The DNA section can help track down the cause of a torque converter failure and prevent repeat failures. There are two main types of industrial torque converters. Manage Settings number stamped into the aluminum bowl between the fins, near the The transmission case has 16 bolts and a transfer case of aluminum. torque converters should be used in 1996-97 trannys. code is not enough to ensure you get the correct replacement product as The converter is also matched to the transmission's gear ratios. INTERNATIONAL Customer Options, Summit Racing Equipment SpeedCard 1996-up converters are built to be compatible with GM's PWM TCC apply strategy Any manufacturer, third-party, extended warranties, or limited lifetime warranties, should be handled through the manufacturer. the hub have two ears, splines or gear teeth? Who knows. Transmission Information:__________________________________________ Is drive a quill shaft for an auxiliary pump, etc. So how can you know which one of these you have? However, there are still a number of countries that use foot-pound as the unit of torque. Based on the weight sizes given, the converter application is for a 1973 to 1976, 400, 440 engine with a cast/forged crank. Design & Manufacturability | Stock up on Stock Replacement Parts! Serial Number___________________________________________________ I have included a video to simplify the procedure of the TV cable adjustment. Are you having issues with your 700R4 transmission or just looking for some information about it? D shaped bolt heads?_____________________________________, 3. drilled and tapped directly into the bottom of the converter All stall speeds are approximate ratings for fresh big block engines. However instead of effecting the way air flows we are affecting the way the oil flows in order to get a different / desired effect. This information should be used as a Training Online Engineering. Shop Torque Converters at Summit Racing. the converter. When in neutral, park, or slowing to a stop, the torque converter isolates the engine rotation from the transmission. Identifying Aluminum Bolted Torque Converters. Thanks to your efforts, weve discovered ways to tell metric from standard threads, how to tell a furnace-brazed converter from one that isnt, and what the identification codes, numbers and tags can tell us about the particular characteristics of a given converter. Factory stall speed 1800-2100, 11" diameter, wide ring gear. so the "customer" would not feel it come on. We also have common abbreviations and an easy-to-use conversion table available. This torque converter features a billet piston replacement for the stamped OEM piston. A heavy car with large diameter tires will raise effective stall speed as installed in the vehicle. body. Electronics Instrumentation But its not that easy, because the transmission was made in the 1980s also. If the problem persists, there might be a problem with your instrument cluster. Note: Values should be entered consistant with . At this time, a clear picture of Count and note the number of splines or gear teeth. Another eye-opener came when an FLHB code was found with a new large four-digit number. bored or stepped. Threads & Torque Calcs _____________________________________________, 9. It weighs 133 pounds without transmission fluid. If you can give me the size of the 2 weights, I can probably narrow it down for you. click Engine builders use car weight and dyno data to aid selection. The converter is the pump and is located on the transmission side of the 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. work correctly. The mounting pads will tell you a bit about which one it is..if it has stamped pads with a hole in them, triangle shaped but not very big, it's most likely the most common Chevy th350 converter. Product should be thoroughly inspected prior to installation. How Rated converter stall speeds vary due to engine size, engine torque output characteristics, vehicle weight, camshaft, and other factors. This means that the Many of you submitted valuable tips to us, which were reviewed and tested for accuracy by the Torque Converter Rebuilders Association Board of Directors. Street Rod torque converters from Hughes Performance are designed and manufactured for street rod enthusiasts needing a bit of an upgrade over their OE stock converters. Estimated Ship Date: Tomorrow. Knowing your transmissions specs can help you make informed decisions about upgrades and repairs. Knowing what the stamped number means, relative to what company the converter was made by, is the issue with an unknown manufacturer converter. Starting in 1998, GM revised the lock-up strategy once Also, check the transmission fluid level and replace it if its worn. Whats the four digit Friction Formulas Apps Actual item may vary. 6. Often, the order a Transtar torque converter by using almost any competitors part ( 37 ). accurate and up to date information on GM transmissions that is code. GM Cars - GMC, Chevy/Chevrolet, Buick 1982-1990. Estimated International Ship Date: JavaScript is disabled. Intended Use . PCM is actually making the TCC slip during apply. The second number was 4742 and it was found on converters with a FYHB code on the I.D. These are often quite expensive, and you need some skills to replace these. You usually find the 700r4 transmission in GM cars like the Chevy Blazer, Suburban, Camaro, Corvette, Impala, and even in Oldsmobile Cars and many more. Try looking on their website and see what you find. ATI's line of Outlaw drag race torque converters are designed to meet the high horsepower demands of heads up style drag racing. Out of Stock. through the drive plate and into the flywheel and is located The type of torque converter you choose depends upon how you intend to drive the vehicle. ok first off. looking down through the converter hub at the turbine Volume of Solids Calculators Should You Repair, Rebuild, or Replace Your Car's Transmission? 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. There are many new parts for this transmission, and most of them are pretty high quality. style, bolt pattern, and pilot characteristics. There are some common problems that you should always check first when you are troubleshooting your 700r4 transmission. Transtar Part Number: GM8403. Make sure to adjust the TV cable with the videos help. During acceleration the stator, which is locked in a counterclockwise direction, helps redirect the oil back into the pump assembly. The population of bolted style If your torque converter is a . on the converter? To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Also know as the driven member, looks very similar to the impeller because of its shape and curved vanes. __________________________________________, 5. The system is still in use today and is living proof that the better informed the customer is, the fewer problems you have. you taken the converter apart? Summit Racing Part Number: HUP-GM20 . 800 945-7644 customerservice@protorquetools.com. This design severely limits oil flow and does not optimize the angles leaving the stator and entering the impeller. Hardware, Metric, ISO You must log in or register to reply here. The first type is a steel welded type torque converter and is the most common. EachRECONCertified torque converter are rebuilt to the highest-quality standards in the industry and warranted to be free from manufacturing defects in material and workmanship for 4-years, 100,000-miles from the date of purchase. Videos Design Manufacture Torque Converter Bolt Circle (in. Don went on to correctly identify six out of six converters. #6 = 1397rpm typical 5.0L & 5.7L unit #7 = 1654rpm used in v-6, 5.0L & 5.7L I'd use the converter from the transmission you bought. dual stators and therefore two sets of stator splines. Estimated Ship Date: Tomorrow. Feedback Advertising ATI now offers Bolt-Together and . They can be a sticker, TCI Competition Torque Converter Ultimate Streetfighter 3800 Stall 5R55 GT 2005-2010 $1,418.95 SEE DETAILS Performance Automatic C4 Rebuild Kit 1970-1981 $329.99 SEE DETAILS Master Rebuild Kit Mustang C4 Transmission 1970-1973 $135.95 SEE DETAILS Scott Drake Transmission Overhaul Kit Mustang C4 Transmission 1965-1969 $98.78 SEE DETAILS The 4L60E is rated to handle up to 360 ft-lb (490 Nm) of torque. . Stall Speed Rating RPM Range: 2,000 . stamps which are also located between the dimples tend to bend the cover down. Comments:______________________________ Check the recent customer reviews of the part to get an idea of the quality of the product. on the converter? thanks so much!! 3. presented here as factual as possible, but there still could be some discrepancies Wasn't in a box, and don't see anything to identify it. Today, Estimated USA Ship Date: Free Shipping; B&M Tork Master Torque Converters 20400. Try to get as much information as possible about it, like the mileage, how many transmission fluid replacements were done, etc. letter stamped between the dimples of the impeller on the converter body. Reviews You are using an out of date browser. Core Charge $150.00; Free Shipping; $376.99. GM made several different converters that will fit the th350. a dab of paint, a laser etched letter & number code, an ink stamped letter & The 350 transmission is 21-3/4" long and its one-piece case is cast of aluminum alloy. *this is the shaft that inserts deepest into the torque Part Number: NAL-24045127. Power Transmission Tech. 91 reg cab short bed 350 motor. Note any identifying marks you find. number code, or an OEM part number in any of these formats. 4T60-E -- Our unmatched 5-step remanufacturing process combines the precision of computers with the experience of engineers to ensure consistently high quality is achieved. Most GM automatic transmissions look almost identical. He has been working as a car mechanic for over 10 years, and the majority of them specialized in advanced car diagnostics and troubleshooting. I also dont know if cast crank weights are the same for big and small blocks. used a soft-apply (PWM) TCC strategy which was designed to soften the TCC apply Learn More Here. established and pricing and availability can be supplied. converter body that acts as a heat sink and helps circulate + -. But you can be sure that all of the converters that do not dip between the dimples will not be furnace-brazed. There are some videos on Youtube on how to replace the 700r4 converter. You can use the old cut-and-look method, but its often time-consuming and as the number of furnace-brazed converters has increased, so have the odds of finding one quickly. Sometimes people let their transmission go many years without a transmission fluid change, and this lack of maintenance can cause damage to the transmission. Let the transmission fluid heat up to working temperature and let your car idle in Park while checking the dipstick. Check the Fit, Estimated USA Ship Date: If you can see it correctly, you will find an identification number containing 7-8 characters and numbers. This dilemma was especially problematic when it came to the, Jim began to notice subtle differences in the colors and patterns of the colors on the I.D. Phenolic washers do not withstand the heat created by the torque converter clutch slippage. There could be a problem with the converter itself, which may need to get replaced. Due to its popularity, it is also quite effortless to find replacement parts for this transmission. In other words, you want the torque converter to slip until RPM reaches the 2,400- to 2,600-rpm range. 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. However, I have heard that these So, whether youre just curious or actually in need of some transmission repair information, keep reading for all the info about the 700r4 transmission. some codes are used on multiple torque converters. Friction Engineering 2. woven-graphite TC clutch material. on the engine side of the converter. It is the overdrive lockup and straight drive off the torque converter (no slippage) that gives you the RPM reduction and the corresponding efficiency. thread size and pitch. Used and quality-inspected parts are sold as-is with no warranty. Finishing and Plating These converters feature silicon brazing for strength, needle bearings for reliability, and stator modifications for more torque multiplication. For a better experience, please enable JavaScript in your browser before proceeding. Ask a Product Question. Definitely externally balanced with the 2 welded on weights. Count the number of threaded nuts and identify the carbon clutch TC's in earlier trannys that did not have PWM technology, however in the stator and the next lower set of gear splines are in the The transmission was made between 19821992. Note: some specialized converters may have BTE 8" Race Torque Converter. The weights measure 1 3/8 3/4 1/4. Pilot - the portion of the converter that is inserted many total holes, including the ones being used, are there converters is declining. They are blue in color and if you go through their catalog, (Torque converter catalog look at page 65, part# CR70X and CR70X-S1) you can find your converter. Now with that being said, DTT also uses a blue . Engineering Mathematics first record the make and model of the equipment. Plastics Synthetics _________________ Dowels alignment pins on the mounting side of the Part Number: BMM-20404. shop for your specific application and needs. Gears Design Engineering ring or a sealing ring. Loosely speaking, torque is a measure of the turning force on an object such as a bolt or a flywheel. This would be an excellent means of identification except for one factor: Many of the I.D. Remember to inspect the transmission closely before you make your purchase. Applications and Design If the fluid seems okay, its time to check your TV cables adjustment between the transmission and the throttle body. The recommended transmission fluid for the 7004r is Dextron VI, with a capacity of 11 Quarts. again only this time the TCC may never completely lock up and may always slip _______________________________________________________________. stickers with the I.D. Hydraulics Pneumatics 5.0 out of 5 stars. RELATED: Why is My Car Shaking? teeth, how many? The transmission is pretty reliable and can handle torqueup to around 350nm~; remember that these are only the reported numbers, and it can be higher or lower depending on the age and maintenance. exterior of the converter body. The second type of industrial torque converter is the bolted Magnus is the owner and main author of Mechanicbase. If you look down into the hub, the top set of gear splines are bolted torque converters requires some additional questions Recon torque converters are warranted for 4-years/100,000 miles, whichever comes first. tag. This With superior quality guaranteed, this Recon torque . 2801539 A727A 67-68 Belvedere, Charger, Coronet, Fury, Polara, Monaco w/ 318 + HD transmission or trailer package. the end of the hub. the lockup feel will not be the same. converter, 6. decoding process. If the I'd like to know if this is internal balance or not. This assembly is what mechanically links the turbine to the front cover. These nuts will be arranged in various patterns such There are two main types of industrial torque converters. dba Summit Racing Equipment | Trademarks, Everything You Need for Anything You Drive. piece "non-serviceable" unit. A forum community dedicated to GMC and Chevy full size owners and enthusiasts. Turbine Splines the lower set of splines seen when is there visible damage to the internal parts? If so, the drive plate from the converter. Stall speed 3000? different meanings. The Engines that produce more low-end torque cause a given converter to stall at a higher rpm. There are both mechanical and electronic controlled speedometers on the 700r4 transmissions. Estimated International Ship Date: These steps are everything you should need to identify your transmission correctly. The second type of industrial torque converter is the bolted or "take apart" style. Now find the unit you want and get the conversion result next to it. By using the first two letters of the code in conjunction with the color and pattern of the color on the I.D. The last way to identify if its a 4L60 or a 700r4 is to look at the transmissions rear for the Aux TV Cable or the wirings, as discussed before. The GM converters have proven particularly problematic. ____________________________________________, 2. Copyright 2023 by AUTOSALES, INCORPORATED The stamped steel cover flexes at the point the mounting pads are welded on. It also acts as the friction surface on lock up units. Are They can be U.S. standard or metric. identifying marks, most notably on the engine side or "bottom" torque converter is unpainted, are there any stamped ink numbers An impeller that has not been in an oven will be straight across between the dimples (see. which are at the end of this section. After checking the mounting pads on hundreds of converters, we found that all of the converters with the I.D. This torque converter is for use with Chevrolet flexplates only. _______________, If yes, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. This page has been set up to bring you the most Only Carbon clutch If There are numbers stamped in it behind the paint marker also looks like H05 one side then the other numbers are C07RL :confused013: . which means that you can use the newer converter on the older trans, but not the If you are an international customer who ships to a US address choose "United States Shipping" and we will estimate your ship dates accordingly. identifying FWD torque converters as with the RWD units, however the digits have All rights reservedDisclaimer | 1952-59 Ford Social Group. 2nd Digit (approx stall, depends on engine). 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 Our Billet Front Cover is one integral part and has approximately a 300% increase in thickness to prevent flexing. If you find a speedometer sensor instead, you have an electronic speedometer. Pumps Applications Small blocks will vary 300 to 500 rpm lower. Note whether or not your converter has a shroud, Pictures Enlarge For Details. Civil Engineering They knew there was a good chance that FLHB converters with the early part numbers (the seven-digit part number that started with 86) would have paper linings (see. If you feel vibrations while accelerating your car, there is most likely a problem with the driveshafts, prop shaft, or torque converter. It's not for a 318 or a 225 engine for sure though. This TH350/TH400 torque converter has a stall speed of 2000-2300 RPM and 500 horsepower to keep your vehicle running fast and smooth. 1. The turbine is what drives the transmission input shaft. 1. converter. GM Transmission Information If you find that the transmission fluid looks dark red, brown, or even black, its time to replace it and flush your transmission. Here is what you need to know about the 700r4 transmission. When some of the members of the TCRA Board of Directors were testing Jesses method, Don Randolph of Dacco said he could tell if a 298mm impeller was furnacebrazed just by looking at it. Its hard to say if the threads were changed by an individual or during the remanufacturing process, although the latter seems more likely). Soon they had expanded their I.D. Torque Equivalents - Conversion Calculator. (8 Common Causes & How to Fix it), 5 Symptoms Of A Bad Tie Rod End and Replacement Cost, Four-Wheel Steering: Pros, Cons, and Cars That Have It, How to Check Automatic Transmission Fluid, Transmission Fluid Color Chart And What Each Color Mean, 6 Causes of Transmission Fluid Leaks and Repair Cost. Recon Certified Torque Converters feature a newly-refreshed paint color, proprietary to Transtar, known as Star Metallic Blue. In 1991, the 700r4 transmission was replaced by the popular 4L60 transmission. If splines, how many?_____________________________________________ bolted torque converter. The hammer strikes the converter between the two dimples, on the middle row of dimples, on the impeller side of the converter (see. The old one has all the particulates and burned fluid from whatever you did to the old transmission inside of it. Fins - metal ribbing on the exterior of the converter It will Reference numbers can be many things. Daccos latest catalog includes some handy furnace braze information in the. These straps allow attachment directly to the Applications Hub - the portion of the converter that is inserted into Furnace brazing strengthens the turbine assembly for the added torque it is required to handle. Whats the four digit Mounting styles GM uses the same type 4-digit ID method of welded unit, you need to search the exterior of the unit for any Engineering Book Store This type of turbine provides almost adequate strength for the job it is intended to do. hub. more air flow to aid in cooling. letters, paint stripes, paint dots, etc. The standard OE clutch material is made of a cellulose designed paper material. You can probably also find one at any nearby junkyard. ________________________________, 4. Browse through the page and find the unit you want to convert from. I am interested in enhancing my vehicles performance. Model__________________________________________________________ Starting 1980-up, GM used a 4-digit ID sticker ready to start identifying your torque converter. For example, pushing or pulling the handle of a wrench connected to a nut or bolt produces a torque (turning force) that loosens or tightens the nut or bolt. Very possible that it is a TCI converter, as they paint theirs black. During the past year Sonnax sponsored a "Help Crack The Code" Contest, appealing to builders from around the country to share information gleaned from years of experience in the industry. None of the above categories describe me. The safest way to determine if you have a 700r4 transmission is to look at the identification tag on the transmission. Login or Sign Up; 0. Note how many stator and turbine splines. $5 Off Your $100 Mobile App Purchase - Get the App. Buy a TH350/TH400 torque converter online from JEGS. hub. These issues include: There is a switch on the brake pedal, and you should check to make sure it is functioning properly. Flanged flange located on the end of the hub. 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. When accelerating, the torque converter transfers increased torque to the transmission. Our mission is to inform our customers to the advantages of using a performance torque converter over factory or OEM units. Codes on a torque converter can come in many forms. It also increases the overall efficiency of the torque converter. Your value gets instantly converted to all other units on the page. What type of question would you like to submit? Remanufactured Transmissions, Remanufactured Torque Converters, Remanufactured Engines, Overhaul Kits, and Aftermarket Replacement you talk to your Transtar sales rep, you give them both codes as well as the All Rights Reserved. I hope this helps. edge of the converter. Almost ALL converter/trans vendors STAMP an ID# into the body of their torque converters. Physics The factory drive hub tends to wear and crack after years of use. Torque Converter wont lock and slipping, 3. Below is a guide to Search. (8 Common Causes & How to Fix it). older converter on the newer trans. If your transmission is not shifting properly, you need to check the TV cable adjustment, as discussed before. Free Shipping - Hughes Performance Street Rod Torque Converters with qualifying orders of $109. Do you know how to tell the difference between a GM, His secret (also GMs secret for many years) is this: Theres an identification groove just above the welds that attach the mounting pads to the cover on all TH0400-style torque converters with metric threads. It is challenging for inexperienced people to identify which transmission they are looking at. Check the wiring diagram and make sure the switch is working correctly and that there is power coming to the switch. For example, if the number is 0, the transmission is from 1990. External balance, but i dont know if that weight package is for a cast crank, or for a steel crank/heavy rod combo.

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