4l70e true tech rebuild kit??
Thread Starter
Joined: Apr 2007
Posts: 595
Likes: 14
From: Dallas/Lancaster
4l70e true tech rebuild kit?? anyone ever used this kit before
any feed back is greatly appreciated
Trutech 4L70E Rebuild Kit Raybestos Blue Plate - Street/Strip up to 700 HP
This kit is complete with all Raybestos Blue PLate frictions including a 7 friction setup for the 3-4 clutch and a complete standard steel kit which includes upgraded reverse turbulator 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.
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 4L60/4L70E 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 Blue Plate 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 are two check valves that are very important to 3-4 clutch life. These check valves are the 3-4 exhaust check valve in the input drum and the 3rd accumulator check valve. Both these valves have a direct effect on 3-4 clutch operation. We include these check valves 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...............
Features and Benefits:
For applications 350 to 750 horsepower:
Complete Raybestos Blue Plate Special kit:
Complete set of 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:
Complete bushing kit with Teflon front pump bushing:
Complete thrust washer kit:
ACDelco 3rd accumulator and 3-4 exhaust check valves for hydraulic integrity:
Bonded steel 3rd clutch piston:
Sonnax replacement load release springs:
Quality OEM filter:
any feed back is greatly appreciated
Trutech 4L70E Rebuild Kit Raybestos Blue Plate - Street/Strip up to 700 HP
This kit is complete with all Raybestos Blue PLate frictions including a 7 friction setup for the 3-4 clutch and a complete standard steel kit which includes upgraded reverse turbulator 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.
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 4L60/4L70E 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 Blue Plate 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 are two check valves that are very important to 3-4 clutch life. These check valves are the 3-4 exhaust check valve in the input drum and the 3rd accumulator check valve. Both these valves have a direct effect on 3-4 clutch operation. We include these check valves 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...............
Features and Benefits:
For applications 350 to 750 horsepower:
Complete Raybestos Blue Plate Special kit:
Complete set of 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:
Complete bushing kit with Teflon front pump bushing:
Complete thrust washer kit:
ACDelco 3rd accumulator and 3-4 exhaust check valves for hydraulic integrity:
Bonded steel 3rd clutch piston:
Sonnax replacement load release springs:
Quality OEM filter:
Registered User
Joined: Jul 2014
Posts: 5
Likes: 0
From: Calgary, Alberta
Personally it sounds OK, but I've been piecing my parts for my rebuild, getting a shell from X company and band from Y company.
Using Borg Warner frictions, High Energy band, Beast sunshell, Transgo shift kit. Or, will be.
Also, the description does not say what bearings, nothing about a sun shell. The sonnax springs are nice.
Using Borg Warner frictions, High Energy band, Beast sunshell, Transgo shift kit. Or, will be.
Also, the description does not say what bearings, nothing about a sun shell. The sonnax springs are nice.
