advantages of a corvette servo?

[brenny-21]

Hey there. Thinking of putting corvette servos in. What are the advantages? There going in a VY L67. Should I put them in. Yay or nay?

[F l a k]

Pretty sure there is just one servo. They are only like $20 in parts but could be a couple of hundred in labour to get it fitted. It'll probably be a 2nd apply servo, which means shifts involving second are improved. I found especially the kickdown from 3rd to 2nd much faster/firmer.

[nathanVY]

1-2 servo and 3-4 servo.

1-2 is most commonly upgraded.

A transmission shop will charge you like $300+ for a corvette servo fitted which is a bit of a joke, it's no more than half an hours work and that's being incredibly generous... really only 15 minutes. a tiny bit of fluid (maybe) and $20 for the part, you don't even have to drop the transmission pan to fit a corvette servo .

[acarmody]

My local joint fitted the servo for $30 when I was getting an oil change.

[brenny-21]

It's just a 1-2. I'm putting it in myself.

So yay or nay to them?
How much harder will it shift?
Will it chirp second?

[VT_SS]

Feel free to correct me if i am wrong but arn't VY model trans less mechanical and more so a computerised tune?

[Munz]

Feel free to correct me if i am wrong but arn't VY model trans less mechanical and more so a computerised tune?

You can change shift points and firm up the change with the computer....but non the less its still mechanical


OP...the corvette servo obviously does whats been stated because of the larger surface area and also generates less heat thru the clutch packs due to more fluid being able to be moved around which intern will lead to a longer life expectancy of the trans

[VT_SS]

You can change shift points and firm up the change with the computer....but non the less its still mechanical


OP...the corvette servo obviously does whats been stated because of the larger surface area and also generates less heat thru the clutch packs due to more fluid being able to be moved around which intern will lead to a longer life expectancy of the trans

Fair enough answer only reason i ask is when i had my car shift kitted and had corvette servo's put in. Some shops i rang said they dont do my model of car because it was more of a mechanical shift kit needed for my car and they only specialised in the electronical shift kit tune.But yes i understand its still mechanical thanks for clearing things up for me mate.

[Munz]

any trans with the E on the end (e.g 4L60e) can use the electronic shift kits however due to the design of the vehicle ECU, shifts may become softer with increasing rpm due to torque reduction programmed into the ECU

So in reality modifying your box was best way to go - at least it will shift hard at high rpm

[VT_SS]

any trans with the E on the end (e.g 4L60e) can use the electronic shift kits however due to the design of the vehicle ECU, shifts may become softer with increasing rpm due to torque reduction programmed into the ECU

So in reality modifying your box was best way to go - at least it will shift hard at high rpm

Oh yes it shifts hard in any gear at high rpm but is smooth when being light footed when your driving the grandparents around cheers for all the info mate

[Trayner]

A transmission shop will charge you like $300+ for a corvette servo fitted which is a bit of a joke, it's no more than half an hours work and that's being incredibly generous... really only 15 minutes. a tiny bit of fluid (maybe) and $20 for the part, you don't even have to drop the transmission pan to fit a corvette servo .

I had a place near me but the shift kit in , corvette servo and auto service for $300 back in the day

[Jezza]

i did the shift kit on mine recently and it was a prick of a thing to do by myself and took me and hour and a half and thats using a hoist and one of the rings thats meant to be loose was jammed when i put it in which caused the trans to slip while driving so i took it to a trans place and $80 and an 40 minutes later it was fixed and it was a small improvement but no chirping

[ephect]

A full shift kit is different to just the servo.

As said above, the servo has a larger surface area for the oil to push against, giving a firmer, quicker shift. When cruising, the oil pressure isn't as high so u get soft shifts, but when booting it, the oil pressure is higher, which will give you a jolt as it kicks into the next gear.

A full shift kit involves changing internal springs and other bits which I can't remember off the top of my head. The servo doest come the kit, nor does the beast retraction shell.

Whether it chirps, depends on engine, tyre quality, road surface temps.. A lot of factors.. Chirping shouldn't be ur main concern

[Sabbath']

Good thread on the servo install:

Corvette Shift Servo Install w/ pics - Chevy Truck Forum | GMC Truck Forum - GmFullsize.com

Lots of info etc.