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Last updated on  Jul 27, 2014 17:38:53 PDT  View all revisions

Item specifics







 Trutech Performance Transmission



1987-1993 700R4

Street / Strip up to 550 HP

   At Trutech Performance Transmission we are proud to provide only the best parts to our customers.  Our Performance Overhaul Kits are complete with all parts necessary to overhaul and upgrade the clutches and band in your transmission.  We have included parts necessary to restore hydraulic intregrity.  Your transmission frictions will be capable of supporting up to a 550 horsepower engine. To support high horsepower engines gear train upgrades will be necessary.

Features and Benefits:

  • Complete Raybestos Stage One Friction Kit
  • Complete set steels with 3-4 Kolene steels
  • Complete gasket and seal kit
  • Wide Raybestos Pro Series Band
  • ACDelco 3-4 Apply and Backing plates for proper 3-4 clearance
  • ACDelco 3-4 Apply ring for proper 3-4 set up
  • ACDelco 3rd accumulator for hydraulic integrity
  • 3 input drum bonded steel clutch pistons
  • Sonnax replacement load release springs
  • Quality OEM filter

Our kits contain parts that are very important to long clutch life. These parts are not included in kits sold by other venders.

Detailed description:

This kit is complete with all Raybestos Stage One frictions including a 7 friction setup for the 3-4 clutch and a complete standard steel kit which includes upgraded reverse tubulator steels and .097" thick 3-4 Kolene steels. Kolene treatment is a thermochemical diffusion process, whereby ferrous parts are processed in molten salt with a specific nitrogen potential. This process provides a surface treatment that enhances wear and fatigue resistance from 200% to 500%. Also included in this kit is a complete gasket/seal kit, the apply and backing plate necessary for proper 3-4 clutch clearance, bonded 3-4 piston, 3-4 apply ring, extra wide Raybestos Pro Series 2-4 band, 3rd accumulator check valve, Sonnax load release replacement springs and OEM filter.

In the 4L60 type transmission the 3-4 clutch is contained in the input drum. The clutch is applied when hydraulic fluid moves the 3-4 piston causing the 3-4 apply ring to engage the clutch. Over the years all these parts have been updated by General Motors. In an automatic transmission it has been proven if you increase the number of frictions in a clutch set up you can increase the torque handling capability of that particular clutch. One issue with this theory, to increase the number of frictions the steels must be thinner to get proper clearance. The 3-4 clutch in this transmission does not work well with thin steels because it is a shifting clutch and the thin steels have an inability to dissipate heat causing the steels to warp, especially in high performance applications. General Motors went from a five friction setup in 1982 to a seven friction set up with six .097" thick steels in the later model 4L65/70E heavy duty transmissions. However, in the standard 4L60/4L60E transmission up to 2010 model year GM used a six friction setup. This Trutech Performance Module contains the Raybestos Stage One seven friction, six .097" thick steel clutch components. To install this clutch correctly we have included all the additional factory parts necessary to achieve proper clutch clearance. All OEM parts included in our Overhaul Module are high quality and meet or exceed factory specification.

At Trutech Performance Transmission we have found the Raybestos Stage One frictions to be an excellent high performance friction. When using a high performance low slip friction it is necessary to calibrate the shift times to engage the shifting clutches quickly. Because this is necessary we highly recommend one of our shift modules.

To ensure hydraulic intregrity our Overhaul Module contains the updated steel molded 3-4 pistons. There is one check valve that is very important to 3-4 clutch life. This check valve is the 3rd accumulator check valve. This valve has a direct effect on 3-4 clutch operation. We include this check valve in all our kits, we consider this low cost insurance.

In this General Motors transmission bushings play a large part in hydraulic intregrity. In a lot of rebuilds, the bushings are not replaced if they "look" good. Our recommendation is replace all bushings in your overhaul.

In the 4L60 type transmission the band is applied to move the vehicle forward in the 2nd and 4th gear range.  In our High Performance Build Modules we use the Alto extra wide carbon band with heavy duty anchors.  When using this extra wide band we strongly recommend replacing the reverse input drum to give the band a new wear surface. However, the drum can be reused if it has no signs of wear. Replacing the drum is always a good idea but not always necessary when using the stock width band.  Do not reuse the drum if it is discolored from heat or is warped in the band apply area.

Combine this kit with one of our shift improvement modules and our geartrain module to give you a strong durable transmission.

If you have any transmission technical questions contact us by email. This is a free service provided to our customers. No purchase is required. All questions will be answered within 24 hours. Thank you for choosing Trutech Performance Transmissions.

Questions concerning your order call 334-470-1288.Visit our store pages for technical information on transmission repair and modifications. We believe in sharing our knowledge and experience with our customers. Our goal is to provide our customers with the information needed to choose the correct parts for thier transmission application.

Get valuable technical information by viewing our tech pages. These pages can be viewed by visiting our Ebay store. They are accessible from the left column of any store page. Click on the logo at the top of the tech page for more information.

Thank you for your purchase. Your satisfaction and feedback is a very important part of our business. If you are going to leave anything other than 5 stars please contact us first to give us a chance to resolve any issues you may have with our product or service. Your satisfaction is our top priority!

We have a new number to contact us concerning your order or for technical assistance, 1-800-762-9846. You can call this number between the hours 10:00 a.m. - 4:00 p.m. CST Monday-Saturday.Toll free number is for U.S. calls only. For calls from outside U.S. call 1-334-577-4400.
Procare Performance Transmissions and Trutech Performance Transmissions are sister companies. We have the same policies and ideals. Procare Transmissions is strictly online parts sales based out of Huntsville , Al.. Trutech Transmissions has a store front, online parts sales and custom builds transmissions based out of Enterprise, Al.. Our website, Trutech Performance Transmissions, is an information packed website we are updating daily. We will in the near future have weekly "Tech Tips" and a blog for sharing ideas. We offer free technical support from an ASE Certified Master Technician by phone or email. We appreciate all our customers for their patronage over the last several years. We plan to continue growing but will never get so large we lose the personal relationship with our customers.

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Item location: Enterprise, Alabama, United States
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