700R4 build thread.

[clinebarger]

Separator Plate.

Use a TransGo 700-P separator plate, At less than $20....Using the old plate is pointless. The holes are optimized for stock-mild builds, If using a Shift kit....Follow the directions for hole sizes.

This Plate Fits ALL 700R4's, Depending on what year/model you have, A couple holes may need to be plugged. The Plate comes with 2 Aluminum Plugs. This is EASY to do, Place the plate on a smooth concrete floor, place the plug in the desired hole, With a Ball-Pein hammer whack the plug a few times (Do Not strike the Plate!!), This will expand the plug & seal the hole.

First, Identify what Valve Body you have,
1st design VB's have separate 1-2 TV & Low bushings (Has a Roll-Pin for the Low Range Bushing).
2nd design has a Combined 1-2 TV & Low bushing (No roll pin), If you have the 2nd design VB, Plug the Hole in the Pic.

If Trans has a Auxiliary Valve Body, Plug the other hole in the Pic.

[clinebarger]

The above Pic is a Non-Auxiliary, 1st Design Valve Body Separator Plate.

This is a Auxiliary, 2nd Design Valve Body Separator plate, The Circle's are where the holes in the TransGo plate that needed plugging....If needed.

Just Info, It's easy to just tell someone to do something, I want to show Why you need to do it.

[clinebarger]

1-2 Accumulator

Inspect Accm. Piston for Pin wear.
Inspect Pin for wear.
Inspect Accumulator Housing for wear.

Install new seal on Accm. Piston.

'82-'92, Install Piston in bore with "legs" up, Then Spring.

'93, Install Spring in Bore, Then Piston with "Legs" Down.

The '82-'92 Stack-up produces a later...Firmer 1-2 shift.
The '93 Stack-up produces a earlier...Softer 1-2 shift.

[clinebarger]

Auxiliary Valve Body/Forward Accumulator.

Remove the 3 8mm headed bolts over the Forward Accumulator assembly.
Remove Spring & Piston.
Check Piston Pin Bore for wear.
Install new seal on Fwd. Accm. Piston.
Clean Bore of all clutch material.

Check Cover and see if the Pin can pass though the hole in the center of the Cover, If it can pass through....Obtain a later style Cover OR Braze/Weld the hole shut & drill a oil relief hole elsewhere in the Cover. If the Pin was to work out, You would loose Forward & Burn the Forward Clutches.

All Aluminum Covers have a narrowed-Oval hole.
If you have a Iron Cover, Check it!!!

[BADAZ chevy guy]

Originally Posted by clinebarger

1-2 Accumulator
Install new seal on Accm. Piston.

'82-'92, Install Piston in bore with "legs" up, Then Spring.

'93, Install Spring in Bore, Then Piston with "Legs" Down.

The '82-'92 Stack-up produces a later...Firmer 1-2 shift.
The '93 Stack-up produces a earlier...Softer 1-2 shift.

In my 93 I still want the firm shift. Is it okay to install the accumulator 82-92 fashion, or is that not possible in the 93 models?

[clinebarger]

Originally Posted by BADAZ chevy guy

In my 93 I still want the firm shift. Is it okay to install the accumulator 82-92 fashion, or is that not possible in the 93 models?

You can install it either way. If you find the 1-2 shift to firm after the Band Seats, You can always put it back the factory way.

Here's some info to make this easier to understand.

[clinebarger]

Valve Body Gaskets, Separator plate, 2nd Accumulator, Aux Valve Body.

Use '88 & up Auxiliary VB gaskets with TransGo 700-P Plate ONLY, Even if your running a early Non-Aux trans, The Late gaskets fit the Plate better.

The Aux. Gaskets are identified by painted stripes in the Gaskets. And the Aux. VB holes

Recheck that the Case Checkballs are in place & correct.

With the 2 home made alignment dowels threaded in the "Z" holes.

Place The CASE gasket on the Case, The Gasket is identified by the letter C cut into the gasket.

Place the Separator Plate on the Case Gasket.

Place the Valve Body Gasket on the Separator Plate, Identified by the letter V cut into the Gasket.

Place the 2nd Accumulator Assembly on top & Start the bolts.

Place the Auxiliary Valve Body on top as well (Install #12 CheckBall on the plate or TransJel it to the Aux. VB), See post above for Checkball location.
Start the Aux. VB to Case bolts.

[clinebarger]

Valve Body...

It is very important your work area is clean, Any Valve or Valve Bushing needs to be cleaned as well as the Bore it is removed from. I use a Solvent Blow Gun & New Clean Solvent, Blowing Solvent is hazardous to your Lungs.

Always place your finger over the hole a Bushing/Valve is in when removing a Roll Pin, The 700 isn't to bad about this (The 3-2 Spring IS), Just a good habit.

Let's start with the MOST important part (And gives the most issues) The TV Valvetrain.

Remove the TV Plunger Bushing Roll Pin.

Remove Plunger & Bushing, Use the Plunger Valve as a slide hammer to remove the Bushing, Use fingers, Not Pliers, Dykes or any other tool if you plan on reusing the Plunger or Bushing. New "94 Code" Plunger assembly is a recommendation.

Remove TV Spring.

Remove TV Valve Roll Pin. See Pic.

Remove TV Valve.