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4L70E Rebuild Kit Raybestos Stage 1 { 2006-2012 }

Product Description For Trutech/Procare Parts

Product Part No: -- 4L70E20062012RBK-S1

Transmissions: -- 4L70E { 2006-2012 }
Pricing Information:
Package and Weight
Package Quantity: 1 ea Shipping Weight: 13.00 lbs
Base Price:
$340.59
Product Description
Trutech/Procare Performance Rebuild Kit Raybestos Stage 1.
We are high performance transmission specialists. We offer free advice and technical support from an ASE Master Automotive Technicians. We not only sell parts we build heavy duty and high performance transmissions for our customers all over the world. We are proud to provide only the best parts to our customers. We have found what works through years of experience and training.
4L70E Rebuild Kit Raybestos Stage 1 2006-2012
Our kits contain parts that are very important to long clutch life. These parts are not included in kits sold by other venders
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, extra wide Alto carbon 2-4 band, 3-4 exhaust check valve, 3rd accumulator check valve, Sonnax load release replacement springs, thrust washers and OEM filter.

Part Contents

  1. Complete Raybestos Stage One Friction Kit:
  2. Complete set steels with 3-4 Kolene steels:
  3. Complete gasket and seal kit:
  4. Wide Raybestos Pro Series Band:
  5. ACDelco 3-4 Apply and Backing plates for proper 3-4 clearance:
  6. ACDelco 3rd accumulator check valve for hydraulic integrity:
  7. 3 input drum bonded steel clutch pistons:
  8. ACDelco updated overrun spring:
  9. Sonnax replacement load release springs:
  10. Quality OEM filter:
Detailed Information:
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 4L70E/700R4 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.
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 4L70E/700R4 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 are 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 for choosing Trutech/Procare Performance Transmissions. Questions concerning your order call 334-470-1288..
Trutech/Procare Transmissions
406 East Park Ave
Enterprise, Alabama 36330
Customer Service
1-800-762-9846 Inside USA
1-334-577-4400 Outside USA
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