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Does the MCSS gov have 1 or 2 springs?

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65skyturbo

New Member
Joined
May 8, 2008
Messages
46
I bought a MCSS gov from CK. Tried calling him and the line just rings. Anyways, since I'm having a problem with the trans shifting into fourth only at a very high speed I decided to pull the gov to inspect. There is only one spring on the lightweight side. It looks like there was a 2nd spring on the heavy side because there is a ring with a broken off nub. Just the ring is left, no sign of the spring or the broken plastic nub. So I'm guessing due to the ring being there it should have had a 2nd spring. Is this correct?
 
I have a pile of MCSS governors out in the shop and some have both springs, some don't, some have the hole in the small weight, some don't.

The spring on the large weight is mostly for low road speed, it shouldn't play too much into your 4th gear issue.

Look at the 3-4 shift valve, pressure testing would be good.
 
Not to hijack your thread but why would GM make the same transmission, same calibration, and use different governors?
 
Jakeshoe - I did a pressure test and I have 160 min and 240 max @1500rpm in fourth. If I'm not mistaken, either you or Bison said that the CR valvebody with a BR or MCSS gov would shift at 5600 or so. Evidently this is what I had going on because I put in a non-performance gov that I had lying around and it now shifts into fourth at about 43-45mph. Unfortunately it will only shift at 3900rpm WOT and the shift quality is nowhere near where it used to be. I don't want to complain too much though because this is the first time that I've had my convertor lock up. Now if I can just get the shift feel correct. 2-3 feels very rubbery or like a bump shift. Any chance the Transgo springs in the VB are causing this?
 
I'll have to look at the TransGo instructions for the 200-4R HD-2 kit, it's been so long since I installed the whole kit I can't remember if they have you replace the 3-4 shift valve spring like they do on the 700's

If so, it very well could be a problem.

The CR code I did recently used a TransGo kit but not as per the instructions, MCSS gov, and the 3rd gear correction mods CK uses.
It was 5800 and consistant.
I actually wish I had the car longer to drive, but the customer brought it up for me to fine tune and had a long drive after we got done.
 
I learned the hard way with this last Transgo kit. I think the only parts I used were the 2nd accumulator spring, red spring on the accumulator valve and the white spring on the line bias valve. Since I bought a CK pump, and a Sonnax super servo I didn't use any of that stuff. I also changed the plate hole sizes slightly from the Transgo instructions by using specs that you posted years ago for orifice sizes. So never again will I buy a Transgo kit for a 2004R. It's a lot of money for three springs. Anyways, the Transgo kit does not appear to do anything directly to the 3-4 valve. I'm curious though how the trans would act if I took out the shift kit springs and put the stock ones back in but left the other mods. Also how did you differ from the Transgo instructions on the CR that you did? The reason I ask is eventually I will need the 5600-5800 shifts when I swap in my LS1. Thanks
 
The kit doesn't change the shift rpm, the 5800 rpm shifts were the result of the VB and gov calibration.
I change the line bias and accumulator valve spring, but I don't use the line bias from the TG kit.
I don't use the Reprogramming kit at all anymore.

I use the servo return spring, accumulator springs, and the plug for the F hole.

Orifice sizing you've seen before, I leave the cushion spring on the servo, and I add an additional spring to the 1-2 accumulator.

My VB calibration is a combination of Mike Ridings (blackplaque) suggestion, some tips from CK, and some things I do.

I'm really just using the TransGo SK for the accumulator springs and the plug, but I think in the future I will buy the CK plate, and use my own setup for the accumulator springs.
 
Id start with a new CK plate on any trans that needs the vb dropped. You can then mod the 3-2 control circuit to firm up the 2-3 shift. CK's kit really nails the issues the 200 has been plagued with over the years. I dont like the Trans-go kit that changes shift valve springs.
 
Not to hijack your thread but why would GM make the same transmission, same calibration, and use different governors?

The calibration changes slightly even within the same code slightly over the years. There is CZ, CZ2, CZ3. There could have been any number of reasons for this. Could have been complaints about shifting or some other change int he hydraulics that the engineers thought was necessary.
 
Bison - By issues are you referring to the 2-3 shift quality? CK's plate is the one that corrects 3rd gear issues, right? After driving the car today, I know that I need something to fix the 2-3 shift. Funny thing is that with the MCSS gov the 2-3 shift was really good.
 
Bison - By issues are you referring to the 2-3 shift quality? CK's plate is the one that corrects 3rd gear issues, right? After driving the car today, I know that I need something to fix the 2-3 shift. Funny thing is that with the MCSS gov the 2-3 shift was really good.
The governor circuit shouldnt effect shift quality. CK's kit fixes a lot of issues. Not just the 2-3.
 
Well, I'll be calling him soon enough for the 3rd corrector kit. I think the reason that I noticed the 3rd shift so much today is that I finally had fourth gear and convertor lock up as well. It was the only thing I could find to complain about. It has been a long road of figuring out what was wrong with this trans. Still can't believe I had one of those early hydraulic lock up VBs. Anybody need a large paperweight or door stop?
 
Well, I'll be calling him soon enough for the 3rd corrector kit. I think the reason that I noticed the 3rd shift so much today is that I finally had fourth gear and convertor lock up as well. It was the only thing I could find to complain about. It has been a long road of figuring out what was wrong with this trans. Still can't believe I had one of those early hydraulic lock up VBs. Anybody need a large paperweight or door stop?

Send it this way I will BR convert that beyotch.
 
You can convert this thing? I thought it was beyond help. Is it cost effective to convert?

I convert them to sell on units out the door. Not sure you would save anything. Its just easier for me so I do not need to hunt down hard to find transmission cores. But the answer is yes I have been converting for about 4 years and can convert that VB. If your throwing it away I would be interested.
 
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