Super Servos
Thread Starter
11 Second Club
Joined: Jul 2007
Posts: 50
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From: DFW, Texas
Super Servos I have the below Super Servos and was wondering what else I should put in with them, on a stock 4L60-E, or if I should wait until I build the transmission up more.
Superior Super Servo (K012) - http://www.superior-transmission.com...age.cfm?ID=121
Superior 4th Apply Piston & Cover (K034) - http://www.superior-transmission.com...Page.cfm?ID=73
I had a .500 Boost Valve for my 3rd gen (never installed along with these servos), but I cannot find a .500 one for the 4th gen, closest I found was .490 at Sonnax.
I have done some searching, but most of the talk was about the Corvette Servo, which I already have as a stock part ('02 T/A), from my understanding.
Superior Super Servo (K012) - http://www.superior-transmission.com...age.cfm?ID=121
Superior 4th Apply Piston & Cover (K034) - http://www.superior-transmission.com...Page.cfm?ID=73
I had a .500 Boost Valve for my 3rd gen (never installed along with these servos), but I cannot find a .500 one for the 4th gen, closest I found was .490 at Sonnax.
I have done some searching, but most of the talk was about the Corvette Servo, which I already have as a stock part ('02 T/A), from my understanding.
TECH Fanatic
Joined: Jan 2015
Posts: 1,114
Likes: 33
From: Fort Worth, Texas
.490" boost valve is all you will ever need in a 4L60E.
Installing a 2nd servo with anymore apply area than a "093" Vette servo on a stock unit WILL break ****......Whether it be the Reaction Sun Shell, Or the 2-4 Band.
Normally the Anchor Pin hole in the band will start to elongate & eventually fail, Alto reinforced this on their bands with thicker steel.
The Reaction Sun Shell will either break at the splines & strip them out. Sonnax Smart Shell will fix that.
As a side note, I have seen quite a few Alto bands with the Apply bracket ripped clean off the band when running Superior/Fairbanks 2nd servos.
Wide Alto Carbon Band.
Installing a 2nd servo with anymore apply area than a "093" Vette servo on a stock unit WILL break ****......Whether it be the Reaction Sun Shell, Or the 2-4 Band.
Normally the Anchor Pin hole in the band will start to elongate & eventually fail, Alto reinforced this on their bands with thicker steel.
The Reaction Sun Shell will either break at the splines & strip them out. Sonnax Smart Shell will fix that.
As a side note, I have seen quite a few Alto bands with the Apply bracket ripped clean off the band when running Superior/Fairbanks 2nd servos.
Wide Alto Carbon Band.
Thread Starter
11 Second Club
Joined: Jul 2007
Posts: 50
Likes: 5
From: DFW, Texas
.490" boost valve is all you will ever need in a 4L60E.
Installing a 2nd servo with anymore apply area than a "093" Vette servo on a stock unit WILL break ****......Whether it be the Reaction Sun Shell, Or the 2-4 Band.
Normally the Anchor Pin hole in the band will start to elongate & eventually fail, Alto reinforced this on their bands with thicker steel.
The Reaction Sun Shell will either break at the splines & strip them out. Sonnax Smart Shell will fix that.
As a side note, I have seen quite a few Alto bands with the Apply bracket ripped clean off the band when running Superior/Fairbanks 2nd servos.
Installing a 2nd servo with anymore apply area than a "093" Vette servo on a stock unit WILL break ****......Whether it be the Reaction Sun Shell, Or the 2-4 Band.
Normally the Anchor Pin hole in the band will start to elongate & eventually fail, Alto reinforced this on their bands with thicker steel.
The Reaction Sun Shell will either break at the splines & strip them out. Sonnax Smart Shell will fix that.
As a side note, I have seen quite a few Alto bands with the Apply bracket ripped clean off the band when running Superior/Fairbanks 2nd servos.
What about the 4th Apply Servo Piston?
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Joined: Aug 2010
Posts: 7,323
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From: Ann Arbor, MI
This recent thread might help; also notice the links to other threads in my post #3 there:
https://ls1tech.com/forums/automatic...ird-forth.html
In this case the OP lost 2nd gear, but other times (especially with billet servos) it is 4th gear.
Try to measure your end play, as I describe there, and post your results here.
TECH Fanatic
Joined: Jan 2015
Posts: 1,114
Likes: 33
From: Fort Worth, Texas
I am running a Sonnax 4th servo in my Camaro, I like it a lot! Even with a active 4th accumulator the 3-4 shift is real nice & noticeable.
If it were me & the trans shifts good now.....I would leave it alone & save up some money to have it built.
If you removed the stock washer on the apply pin & replaced it with the Gold Sonnax washer.......This is Incorrect! Leave the stock washer in place, Place the Sonnax washer over the end of the apply pin/E-clip.
The purpose of the Sonnax washer is to emulate the raised **** on the factory 4th piston.
Here is a pic that may help with explaining this, Notice the raised area on the stock 4th piston on the left vs the Sonnax 4th servo in the picture.
Last edited by clinebarger; Aug 24, 2015 at 09:29 PM.
Thread Starter
11 Second Club
Joined: Jul 2007
Posts: 50
Likes: 5
From: DFW, Texas
Sounds good. 2nd gear is starting to go, so I will probably have to rebuild/replace within the year or so. I was hoping the 2nd Servo might help, but doesn't seem like it would help in the right way, lol
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
Sometimes lengthening the servo pin with a blob of weld will get you another 5000 miles or so out of the trans. Follow the links in my post #11 which will take you to links of people that successfully tried that approach. Sure it a bandaid, but give you some extra time.
Really thinking of getting an upgrade servo for mine as I'm getting an occassional 2-3 shift flare even with the Sonnax HD2-3 shift valve. It seems likely the cause is my junk Lokar braided tranmission dipstick does not show the correct level for hot full (assuming fluid level should be near the pan/trans mating service full and running like I've been led to believe.
I have a beast sunshell, wide carbon band, and HD2 kit in the trans already.
Is this still a bad idea? I'm told the servo will still help on a 2-3 shift.
I have a beast sunshell, wide carbon band, and HD2 kit in the trans already.
Is this still a bad idea? I'm told the servo will still help on a 2-3 shift.
The transmission is only 2 years old. I would not think that equates to more than about 30k miles. It only seems to have problems after it performs a 3-2 downshift, when it comes time to upshift back to 3 it wants to slip before engaging.