Couple of tranny related ?'s (servo, etc)...

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07-22-2006, 02:48 PM
DamnYankee

Has it ever been cleared up if the '02 or newer trucks ALL come with "corvette" servos already in them? Seemed to be a lot of discussion in some of the threads, but I couldn't find a definite answer.

I'll be doing my torque converter soon and wanted to do some of the easier improvements while the tranny is apart.

Was reading an article that suggested (among other more expensive things):

- The corvette servo
- Transgo Torque Converter Clutch Modulator
- Aluminum forward and 1-2 Accumulator Pistons
- Replace steel check balls w/ composite plastic

?...Thoughts...?
07-22-2006, 03:16 PM
RedHeartbeat

Get superior 1-2 and 3-4 billet servos. Composite check balls, no. Get a new seperator plate for the valve body if you have over 50k on yours. Transgo SK shift kit, yes. Get new aluminum pistons, yes. Pinless or pinned, depending on the condition of your pin in the bore( if it's wallered out, get the pinless pistons). Mod valve? Don't know about that one.

No, all trucks don't have corvette servos.
07-22-2006, 09:16 PM
GMCwantsLS1

My 02 f-body tranny didn't have one. It does now.
07-23-2006, 01:55 PM
jethro_3

My '05 65E DID NOT have the Vette servos....
07-25-2006, 01:36 AM
DamnYankee

<div class='quotetop'>QUOTE(jethro_3 @ Jul 23 2006, 01:55 PM) [snapback]58758[/snapback]</div>

Quote:

My '05 65E DID NOT have the Vette servos....
[/b]

Hmmm...mines the 4L60e - wonder if that makes a difference?
07-25-2006, 09:52 AM
KySilverado

I think you'll find strong arguments around on not doing 3-4 billet servos.

Transgo, new seperator plates, no composite check balls, vette servo or new sonnex superhold?, and the aluminum accum pistons.
07-25-2006, 10:05 AM
RedHeartbeat

I've got all the above in my trans and it shifts nice and holds really solid. Both servos, all new aluminum pistons, beast sun shell, transgo 4L60-HD2 rev3 shift kit, new seperator plate, stock steel check balls, new upgraded 1-2 and 3-4 shift solenoids, plus all new steels from Raybestos and frictions from BorgWarner.
07-25-2006, 01:39 PM
farmtruc

Why no on the plastic check balls? I know of one top of the line trans builder who uses them.
Just wondering,

allen
07-25-2006, 03:27 PM
KySilverado

I had read somewhere a long time back of failures of the plastic check balls. Heat related best I remember. Trying to look it up. Best setup in my opinion would be separator plate with hard seats and brass check ball. Arguable no doubt.
07-25-2006, 03:32 PM
RedHeartbeat

Plastic is going to fail, no doubts about it. What happens to the transmission when the check ball is gone? Steel will always be there. We replace plastic pistons in there all the time. Why would we take the steel parts out and replace them with an inferior product? Plastic probably floats in transmission fluid, also. One burr on the seperator plate and the plastic gets chewed up really fast. With line pressures greater than 200 PSI, why chance it?
07-25-2006, 10:32 PM
DamnYankee

<div class='quotetop'>QUOTE(farmtruc @ Jul 25 2006, 01:39 PM) [snapback]58995[/snapback]</div>

Quote:

Why no on the plastic check balls? I know of one top of the line trans builder who uses them.
Just wondering,

allen
[/b]

Yeah the article I read I BELIEVE said the composite/plastic check balls were recommended by FLT along with those other things I listed. And they said the idea behind the plastic was that they wouldn't push through the plate like the steel. Who knows...

Anyway, I need to keep it fairly inexpensive (ie, no $100 Sonnax servo or anything). Just looking for some inexpensive ways to help the tranny out while the TC is getting installed.
07-27-2006, 01:14 PM
Hit Man X

Hey man, hit me up on GMFS I have a big list for just VB upgrades on the 60E...