Editing TH700R4 through 4L70E tips and tricks

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==Summary==

This section will contain some rebuild tips and tricks on the 700r4 - 4L70E transmissions.

*These transmissions are all METRIC bolts, nuts and threads

==Rebuild manual==

There are several manuals , DVD and videos found online to aid the DIY person with the rebuild process for these transmissions.  '''ATSG''' manuals are suggested as a reference material for a proper rebuild. They contain specs , photos and a few upgrades for a basic non-high performance rebuild.

==Performance section==

*Kits for performance modifications.

'''TransGo''' seems to lead the market in quality kits.  '''Superior Transmission''' brand products offer quality too.

*3-4 clutch pack.

The 3-4 clutch pack in these transmissions have been a problem area since production release in 1981.

Various 3-4 clutch pack kits are offered.  '''Z-Pak''' from '''Raybestos''' is a high energy material single sided friction plates , '''ALTO''' offers a kit with single sided red friction material friction plates.

Clearance on the 3-4 clutch pack frictions should be in the area of .050 to .070 . This can be adjusted via thin or thicker friction plates or steel plates

*Boost valves;

In a 700r4 - 4L60 non electronic trans, you will want a .470 to .500 main boost valve.  The low-reverse boost valve a .282 or .296 works well. On the low-reverse boost valve measure the long valve land for size.

In a pre-1987 700r4 - 4L60 trans a larger low-reverse boost valve will hold off the auto upshift to 2nd gear while the shifter is in manual 1st gear 

[[Category:Transmission]]
[[Category:Good articles]]

== Reference and reading Material ==

A great place to read up on articles that have been written already and multiply this information in your recent re-build.

== LINKS ==

One of the best articles written on the 700R4.
http://purplesagetradingpost.com/sumner/techinfo/700R4p1.html