Decided to do my first Automatic rebuild

[King Itchy]

Have a 700r4. Shifts like a bastard and I don't like it, so I figured it would be a good learning experience...

It had apparently been gone through before I bought the car, so I have a few questions...
It has a billet servo, dunno who made it, but is it really necessary/advised for a street car? Most places say use a Corvette servo.

The 1-2 accumulator had 2 springs which gouged and physically deformed the separator plate in that area. My guess is this is bad... (the plate needs replaced anyway since a few of the holes have been beaten to hell by the check balls)

Lastly, is there a way to tell if it's had a shift kit installed? The plate doesn't appear to be drilled since the relevant holes are smaller than my research suggest they would be if it had one installed.

 

[camaro71/holland]

For a 700r4 rebuild I would contact Dana from ProBuilt Automatics, he specializes in 700's IMO.

I would leave the billet servo as is, as long as the pin is correctly gapped, no reason to downscale to Corvette servo.

Without (a lot) of experience, it's impossible to tell if the springs in the VB were upgraded. Maybe Dana can help you out on this one.

Pay additional attention to 3-4 clutch upgrade, as it forms the biggest flaw on this type of transmission together with 2-4 band apply (ie Corvette servo).

 

[King Itchy]

Continuing on with this. Trashed the low/reverse spring cage getting it out. More clamping pressure is not more better. Got the Transtec rebuild kit from OPT. Tip for homegamers, there's no documentation and a LOT of gaskets/seals; be careful

 

[camaro71/holland]

No rebuild kit has documentation.... so are you actually saying you're doing your first rebuild without a proper manual?

 

[Fbird]

never is any documentation...Get you a book.... you will never regret having it.

 

[krabben1]

I rebuilt a TH400 for my chevelle,my first auto rebuild.I bought 3 books,and watched every youtube video I could,lol.Thank god too.So many little "hidden" things,and in sequence procedures.Was pretty easy,just needed alot of realestate for it.

 

[Fbird]

btw...your cell phone takes GREAT pics as your tearing it down....and YES you need probably 2 tables and several plastic buckets to lay stuff out. All the clutch packs are quite simple and similar in how they work. You will want to spend the $50 for a clutch pack compressor tool it makes life easy also a 5 piece nose picker set (screwdriver handle with curvy pick ends) IIRC

 

[camaro71/holland]

x2 on the phone tip. It works every time on specifics which manuals don't show in blow ups or don't mention at all.

To give you an idea on working space: this is my work bench with an 'exploded' 4l60e which has a lot of resemblance with an 700-4r.

 

[King Itchy]

Aid get it put together, (with the ATSG manual) but haven't run it yet because COVID means every damn thing takes forever. Waiting on a cotter pin.
And ordering the steel for a new workbench.