Here’s the billet steel intermediate pressure plate. Are Your Hot Rod’s Fluids Ready For Summer Cruising? With the intermediate clutch pack in the case, it's time to install the direct and forward drums. In pump-line-nozzle, unit pump and unit injector systems, only the fuel delivered to the combustion chamber and perhaps a small margin for leakage is pressurized. In 1984, the 700R4 designed for use behind Chevrolet small block V8s received a 30-spline input shaft similar to those found on TH400 transmissions and which also used a different torque converter than its 2.8 V6 and 2.2 L4 engines. ⦠With the direct drum in, the assembly process is continued by placing the forward clutch hub into the forward drum, installing the forward clutch pack into the forward drum, and finishing the forward drum assembly with installation of the direct clutch hub and the snap ring that retains it. Allowing you to experience a standing start performance on a par with that of a super sports car such as the ⦠Thanks, Erich: By Geoff Weeks - Sunday, September 06, 2009 10:06 AM: N= 4 valve head. Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic transmissions developed and produced by General Motors.These transmissions mate a three-element turbine torque converter to a Simpson planetary geartrain, providing three forward speeds plus reverse.. race weight. Super Turbine 400 / THM400 / THM375 / 3L80 / 3L80HD, 700R4 / 4L60 / 4L60E / 4L65E / 4L70E / technical description, 700R4 / 4L60 / 4L60E / 4L65E /4L70E applications. “Care must be exercised to make sure that the inner teeth on the intermediate frictions align properly with the drive teeth on the outer sprag race which is located on the back of the direct drum,” says Nichols. 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The center support houses the intermediate apply piston, with fluid being routed by the valve body through the center support to apply the intermediate clutch pack through the apply piston. Porsche Turbo Charging. “We verify line pressure, shift function, transbrake function, and fluid flow through the cooler circuit during the dyno test, and also run the transmission up to proper operating temperature. race cars without fault. The square notches in the outer shell of the gear set allow for parking pawl engagement, which is a design required because the gear set increases in size when the ratio is reduced, and thus the OEM lug design cannot be retained for parking pawl engagement. Both transmissions are the same internally. (Right) Once the gear train has been placed into the transmission case we can then move on to installing the center support. From the engine/trans mating surface to the cross member mount bolt is 22.5 in (57 cm), and engine/trans surface to output shaft housing mating surface is 23.375 in (59.37 cm) overall, with the tail shaft housing typically measuring 7.625 in (193.7 mm). The turboâs are also now placed right up front and seem like a relatively easy job to replace. Good for up to 400 hp, these 4-injector throttle bodies simply swap out your ⦠Moving on to the internals, Hughes Performance uses a high static rear band in all of their TH400 builds, intended specifically for drag racing use. With these steps complete, the gear train assembly is ready for installation into the Reid case. Aluminum is a naturally “soft” material, and the hard anodizing reduces wear that aluminum is prone to inside the lugs where the direct steels are located inside the drum. 1550: 1570, 1575, 1580, 1585: Fuel: Diesel (optional kit permits B20 compatibility) Diesel (B20 compatible) Gross power at maximum rpm: 25 hp (18.4 kW), PS The Digital 6AL and 6A easily connect to 4, 6 or 8-cylinder engines with a 12 volt, negative ground electrical system. This acts to reduce the forward thrust motion of the converter. What makes the three-speed variant popular in a drag racing environment, particularly in a supercharged combination like BlownZ, is that it gives you better gear splits, or gear ratios. Having looked in-depth at many of the components going into this transmissions, assembly of the build begins with installation of the intermediate shaft into the rear ring gear which is located inside the planetary output carrier. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. The pump stator in the TH400 forms the rear half of the front pump assembly. – Pete Nichols, As Nichols goes on explain, “TH400’s are notorious for generating excessively high converter charge pressure due to the high volume of fluid that the pump gear set is capable of producing. Says Nichols at this stage in the assembly, “Some finesse is required here as we also have to align the spline of the intermediate shaft with the spline of the forward clutch hub as we drop the forward drum assembly into the transmission.”. The gear set design in the Turbo 400, even in OEM form, is probably the strongest gear set design ever developed by the “big three” auto manufacturers. As we move to the underside, we take a look at the deep cast aluminum transmission pan that’s been chosen for this build. The entire forward drum assembly can then be installed into the transmission case, with care taken to align the inner teeth of the frictions with the drive teeth located on the outside of the direct drive clutch pack. Hereâs an exploded view of al of the components that make up a Hughes Turbo 400 build. (Right) The SFI-certified bell housing, also from Reid Racing, which has it’s own set of lugs, and locates around the outside of the front pump. Even the factory gear sets can handle upwards of 2,000 horsepower. For this reason, Hughes utilizes what’s known as a torque converter fluid feed restrictor inside the body of the pump stator, which allows sufficient fluid volume to allow the converter to maintain its fluid charge while reducing feed pressure. Here’s a close-up look at the torque converter’s feed balance circuit, which Hughes has added to their Turbo 400’s to create a balance in the converter fluid feed circuit. The MSD will accept trigger signals from a points or amplifier distributor as well a magnetic pickup. (Center) The forward, direct, and intermediate clutch packs. In the planetary reaction carrier — the front-most gear set — the rear band engages on the outside of the carrier, making for a smoother outer shell. Transmission fluid cooler lines on the 700R4 the bottom fitting on the right side of the transmission is the "out" line to the cooler and the top fitting is for the return line from the cooler. We will safeguard your e-mail and only send content you request. This process is begun by installing the direct clutch pack in to the direct drum, which is then placed into the transmission. Here, you can see the Power Automedia team raising the new running gear up into place behind the blown LSX mill. “The gear set design in the Turbo 400, even in OEM form, is probably the strongest gear set design ever developed by the “big three” auto manufacturers. The original version of the transmission had a 27-spline input shaft (shared with the THM200C and 2004R) which was a common failure point. The Reid Racing TH400 transmission case, offered by Hughes Performance as a much stronger upgrade to the OEM case.. (Left) The Reid Racing TH400 extension housing. Sessions, R (1987). It’s just a fundamentally strong transmission. front shock absorbers & struts (61) front shock/strut components (33) front steering knuckle/spindle (101) front suspension (200) front suspension rubber kit (2) rear shock/strut components (5) rear shocks & mounts (54) rear suspension & mounts (154) rear suspension rubber kit (4) road wheels. You might say we’re out for blood in 2014 with our Project BlownZ Camaro in the 275 Drag Radial ranks. Gaetan oerron says ... E10 is commonly present in most pump ⦠We'll send you the most interesting Dragzine articles, news, car features, and videos every week. From here, we’re ready to install the direct and forward drums. The NTC- has a centrifugal water pump? “Anything we can do to reduce rotating mass in the transmission serves to reduce stress on the intermediate sprag,” says Nichols. The planetary sun gear is placed into the output carrier, which is then joined to the planetary reaction carrier. The High Energy frictions are likewise exceptionally durable and provide a cushion as they apply, resulting in less shock to the intermediate sprag. The non-PWM (1993-1994) style 4L60Es are not interchangeable with PWM-style (1995 and later) 4L60Es. The World Of A Pro Tuner With Jamie Miller: DZ Podcast E84, “Kamikaze” Plots Return From Devastating “Street Outlaws” Crash, Connie Kalitta’s Airline Empire Is Bigger Than You Think, Trailer Safety: How To Protect Your Racing Operation From Fire, Reid Racing SFI-certified transmission case, Reid Racing heavy duty extension housing with roller bearing, Custom steel forward drum with oversize input spline, Heat treated extra wide intermediate sprag races, Billet aluminum planetary carriers with billet steel straight-cut planetary gears, Thrust washers replaced with Torrington roller bearings, GM cast iron front pump with custom pressure regulator and modified converter feed circuit, Pro Series transbrake valve body with reverse shift pattern (P-R-N-1-2-3), Lokar NHRA-approved locking dipstick and tube spec. The billet steel constructions also reduces flex. Gear train play is verified and set at this stage. Highly experienced in engine tuning via many platforms such ⦠Here’s a rear view of the pump stator. The Oldsmobile V8, also referred to as the Rocket, is series of engines that was produced by Oldsmobile beginning in 1949. Even the factory gear sets can handle upwards of 2,000 horsepower without an issue, which is unheard of out of any other transmission. You may recall that in December, we published a story along the very same lines, guiding you step-by-step through a custom-built Powerglide and converter package build, that will find its way into our Project Fugly wagon this summer. In 1996, GM introduced a redesigned 4L60E transmission case that incorporated a bolt-on bellhousing and a six-bolt tail housing. Buy online, we ship to the UK and worldwide and supply Volvo parts for all volvos via our secure online Shop. Between 1984 and 1987, internal components, from the ring gear to the oil pump housing, were updated, ending with the auxiliary valve body for 700s manufactured after October 1986. The venerable Powerglide, long regarded as the bulletproof, go-to drag racing transmission, has slowly gained some company from the Turbo 400, as Nichols went on to tell us. Much of this has can be attributed to a strong push by manufacturers to satisfy the needs of ever-higher horsepower race cars over the last 3-4 years, with aftermarket cases and components, like the build you’re about to see. The Rocket, along with the 1949 Cadillac V8, were the first post-war OHV crossflow cylinder head V8 engines produced by General Motors.Like all other GM divisions, Olds continued building its own V8 engine family for decades, adopting the ⦠4L60Es manufactured after 1995 use snap-in connections instead of threaded. “If you have a powerplant with a narrower operating range in terms of its effective power band, anything you can do to keep that RPM drop manageable, the faster the car is going to run,” says Nichols. © 2020 Power Automedia. Find cool custom and classic cars, muscle cars, SUVs, and trucks and browse all 991,627 vehicle pictures, for sale info, parts and builder's page at CarDomain.com External dimensions are similar to a THM350 with a 9-inch tailhousing found in Chevrolet/GMC long wheelbase truck/vans and 1971-76 B-bodies (Bel Air, Impala, Caprice). The 4L70E transmission is the same as a 4L65E with a speed sensor located in the pump. It was designed with a three-element turbine torque converter mated to a epicyclic planetary geartrain, thus delivering three forward speeds plus reverse. The output shaft also locates the planetary output carrier through the square-cut lugs in the outer shell of the housing. What about the NTA855? Hughes offers several ratio options in their two- and three-speed builds, all featuring billet aluminum construction for the carriers and billet steel for the actual gears. “This reduction in mass also serves to reduce parasitic horsepower consumption through the transmission.”. The basis for this build is Reid Racing’s TH400 transmission case, which Hughes Performance offers as an SFI-certified upgrade in all of their builds. GM added a fifth solenoid to the valve body, called the PWM solenoid. Thanks to the on-board DC charger with 150kW, you can also conveniently use public 400-volt charging stations. As Nichols shares with us, “The center support also directs fluid flow to the direct drum for application of the direct frictions. “We use a specially calibrated set of direct piston return springs that help release the direct clutch pack as quickly as possible when the transbrake is released. The tailshaft housing is held onto the main case by four bolts (the bolt spacing is similar to the THM350), and uses a square-cut o-ring seal, and not a gasket. Next are the forward, direct, and intermediate clutch packs — a combination of red racing (forward and direct clutch packs) and High Energy frictions (intermediate clutch packs). Once the center support is in the transmission case, the intermediate clutch pack is then installed and retained by its large snap ring. The back of the pump houses the pressure regulator assembly and provides a fluid feed to the forerd drum for application of the forward clutch pack. Today’s aftermarket manufactures have taken this original design much further — as we’ll be highlighting in the build-up in this article — developing custom cases and internal components to make a durable transmission even greater so. (From left) The pump body and gear set for the transmission, the billet intermediate shaft, billet steel input shaft with forward drum, and the transbrake valve body assembly, which has a reverse shift pattern (P-R-N-1-2-3). In this guide, we’ll be breaking down each and every part of this particular TH400 transmission and the processes and steps taken to complete its build-up. (Left) The planetary sun gear is installed into the output carrier, and the planetary reaction carrier is joined to the output carrier. Once assembly is complete, each and every transmission goes to Hughes Performance’s in-house dyno for testing. But this time around, it’s all about the venerable Turbo 400, which has taken drag racing by storm in recent years as high performance drivetrain manufacturers likes Hughes Performance have focused their efforts on the once-OEM transmission fit for high-horsepower drag racing. All rights reserved. “Numerically, the lowest you can goon a low gear ratio in a ‘Glide is 1.58:1, so if you need something lower than that, it’s where the two-speed 400 comes into play,” Nichols explains. The gears have straight-cut teeth for strength, proving themselves well in cars over 3,800 horsepower and 3,250 lbs. These fittings are .25 in (6.4 mm) pipe thread, and can include an adapter from the factory for threaded steel lines in a SAE size. From left to right, top to bottom are: valve body, output shaft, pump stator, planetary gear sets, rear band, pump body and gears, direct drum, direct clutch pack, forward drum and input shaft, forward clutch hub, direct clutch hub, direct clutch pack, intermediate pressure plate, ⦠The Turbo Hydra-Matic 700R4 can be identified by an oil pan number six shown at General Motors Transmission Pans. We specialize in high horsepower forced induction engines. A special thanks to Pete Nichols and all the staff at Hughes Performance, who made this informative trip through the construction of their Turbo 400 possible. The majority of 1998 and later applications of the 4L60E were two-piece cases (i.e. The planetary sun gear, meanwhile, rides between the planetary reaction and planetary output carriers, and is driven by the sun shaft through the large inner spline inside the gear. Once it’s earned the seal of approval on the dyno by the Hughes staff, the transmission is sent out the door, arriving just in time to raise it up into place in our Project BlownZ Camaro for what we anticipate to be a record-setting year of racing, and the bulletproof Turbo 400 transmission will certainly be an important piece of the puzzle. Also in 1996, GM changed the 3-2 solenoid to a different style which makes it not interchangeable with any previous models. The case is mated with a Reid Racing SFI-certed bellhousing that, likewise, with its impressive strength, doesn’t require an external shield. So on the gear change, the engine doesn’t see as much RPM drop, thus the engine spins for a longer period of time in its primary effective power band, compared to what a Powerglide, for example, would offer.”. Connect the 2 radiator fans to CPU and CPU_opt fan headers on motherboard. – Pete Nichols. Engines with relatively small thrust bearing surfaces such as the LSX and Ford modular platforms are particularly sensitive to this issue when using a TH400 behind one of these engines.”. © 2017 Power Automedia. As well, a torque converter feed balance circuit, an additional fluid passage, is added to create a balance in the converter fluid feed circuit. After working with the Power Automedia staff for some time on a freelance basis, Andrew joined the team in 2010. Now available with the award winning ATI T400 SFI Certified SuperCase. The stock 1996 to 2004 4.6L V8 Mustangs came with respectable Horsepower and Torque from the factory, but after installing a Hellion Twin Turbo Kit you will be planting a tire shredding 400 to 1,200 Horsepower to the pavement (depending on ⦠How to Work with and Modify the Turbo Hydra-matic 400 Transmission, Learn how and when to remove these template messages, Learn how and when to remove this template message, http://www.autorepairmanuals.biz/site/573683/page/372807, https://en.wikipedia.org/w/index.php?title=Turbo-Hydramatic&oldid=999011687, Articles needing additional references from July 2011, All articles needing additional references, Articles that may contain original research from July 2011, All articles that may contain original research, Cleanup tagged articles without a reason field from July 2011, Wikipedia pages needing cleanup from July 2011, Articles with multiple maintenance issues, All Wikipedia articles needing clarification, Wikipedia articles needing clarification from March 2015, All articles with specifically marked weasel-worded phrases, Articles with specifically marked weasel-worded phrases from March 2015, Articles with unsourced statements from May 2020, Creative Commons Attribution-ShareAlike License, This page was last edited on 8 January 2021, at 02:15. Here’s where we begin the final assembly of the Turbo 400, with the installation of the intermediate shaft into the ring gear, which is located inside the planetary output carrier. N55 Stage 1 Turbo Upgrade: ~400-425whp; N55 Stage 2 Turbo Upgrade: 450-550whp; N55 Stage 3 Turbo Upgrade: 600-650whp and beyond (for the brave) Supporting Mods before Upgrading your Turbo The low roller clutch then joins the mix as it’s installed into the reaction carrier. The construction of this particular case is superior in strength to OEM cases, and in fact, does not require any external safety shields. Hughes Performance tests every transmission they build, verifying line pressure, shift function, transbrake function, and fluid flow through the cooler circuit during the dyno test, in which they also run it up to proper operating temperature. The early designs simple on or off lockup function while the later design can variably lock as to not feel the lock up occur. 2 and 3 speed versions available with many gear set ratios to choose from. The Hughes team installs the output shaft into the back of the planetary output carrier, also retained by a snap ring. These have a reverse (P-R-N-1-2-3) pattern. (From left to right) Inside view of hard anodized, billet aluminum direct drum, the custom ratio planetary gear sets, the planetary output carrier, and the planetary reaction carrier. In common rail systems, the high pressure pump is a stand-alone design that generates high pressure and also provides some metering capability. From left to right, top to bottom are: valve body, output shaft, pump stator, planetary gear sets, rear band, pump body and gears, direct drum, direct clutch pack, forward drum and input shaft, forward clutch hub, direct clutch hub, direct clutch pack, intermediate pressure plate, intermediate clutch pack. The shaft is retained to the ring gear by a simple snap ring. Our A/C LS1 turbo system is one of the most complete kits on the market today for these cars. With the center support in, the intermediate clutch pack then follows. When excess charge pressure is generated into the torque converter it can then be physically thrust forward from that high fluid pressure. Direct Injection High Pressure Fuel System Upgrade for 2014-2017 GM 1500 Series Trucks and SUV with 5.3L and 6.2L Engines NEW PRODUCT: The Armageddon 465 LPH Fuel Pump is for adding... Add to Cart Pre-Order Now This pan has a 1/4-inch thick sealing rail and holds two additional quarts of fluid for maximum cooling capacity. (Right) A look at the hard anodized, billet aluminum direct drum with Pro Mod 36-element intermediate sprag. Another reason for the use of the billet drum is preventing a drum explosion in the event that it would go into an overspeed condition when shifting from high gear into neutral under load, where drum speed can nearly double. Of course, there have been a host of other off season changes on the car, as well, including the very ingredient that gets all of the power from the ProCharger F1-X-equipped, Late Model Engines-prepared 400 cubic inch LSX mill to the chassis — that being an all-new three speed Turbo 400 transmission from the drag racing driveline geniuses at Hughes Performance in Arizona. And the price is a "Go" as well! m) of torque of the 6.0 Vortec engine. (Clockwise from top left) The planetary sun gear, planetary ring gear, torque converter fluid feed restrictor (where fluid is routed from the front pump through the stator body into the converter), and the pump stator. 20+ Years of experience in building, tuning and racing high performance vehicles. That brings us to the planetary output carrier, or the rear-most gear set in a TH400 planetary assembly. These feature a heavy-duty, carbon-based lining that creates a high co-efficient of friction for the utmost in holding ability while on the transbrake.
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