Alright, before I had the tranny in my car rebuilt, I had put a different governor in it (the one in it was seized). We grabbed the first one we could get to, which was an extremely heavy (one of the heaviest i've seen) governor out of an old gmc van. Well, i'm pretty sure that its still in there, and is causing my shift points to be lowered. With the stock tranny I would shift at 6K or a tiny bit above, which is perfect. Now it almost always shifts at 5K, sometimes less. It shifts great and going from a stop it still hauls ***, but I think i'm losing quite a bit of performance shifting that early. Also, it doesn't seem to want to downshift as fast as it should, and almost never downshifts into first (I can be going 15mph in 2nd and floor it and it won't go into first). Would the governor affect this? Any input? and FWIW, I still have a brand new 4L60 governor in my garage (which is one of the lightest i've ever seen) So I was thinking about swapping that in. thanks

 

Ah... I think my problems have something to do with whatever holds first gear.... Most of the time when it shifts early like that, its the 1-2 shift, and it won't ever downshift into first. Also, when I manually pull the lever down to 1, it will just shift into 2nd anyway. what could be causing this?

 

These all could be governor related problems. By "siezed", do you mean the valve was stuck? If you knock the roll pin out of the gear, it'll slide off and you can take the valve out and clean it. Common 2+2 will work fine. Just blow it off with compressed air when you're done.

Try starting with the original governor, and go from there.

BTW, A governor with heavy weights and/or springs will always make your shifts earlier. Fluid pressure pushes the valve toward the weights. Centrifugal force from the governor turning pushes the valve the other way against fluid pressure when the weights open. The heavier the weights/springs, the faster they open.


Frank
All-Trans Transmissions

 

I don't have the original one, but the 4l60 one is very similar (no weights added).


and by seized I mean, with a punch and hammer you couldn't move the valve

 

would this cause the cars inability to hold first gear? or is there something else wrong here? I'm not even sure if its the same transmission or if they just replaced it with a rebuilt one. so I don't know if it has that heavy governor in there. i'll have to call them.

 

Call up your local Chevrolet dealership and order one, or try a local transmission shop.

Frank

 

What would I ask for?

 

Even when we install "shelf units", we always use the governor out of the original units.
It sounds like the governor itself may be bad. The top of the governor is "staked" to the shaft..I've seen them come apart (or loosen) there, and bind the valve up.
If the problem isn't there, it sounds like it's a valvebody problem...I.E. stuck valve


Frank

 

Governor for a 1993 Z28 with a 700/4L60.

Frank

 

But thats what I already have. I ordered this one and they had me give them my gear ratio an everything. Its brand new, still in the package



when I said I didn't have the original, I meant I didn't have the original to THIS transmission. The tranny is out of a 91 camaro.. its not the right one for my car

 

The transmission was totally rebuilt 3 weeks ago. Wouldn't they have cleaned the valve body?

 

You'd be surprised at what I've seen people call "rebuilds", in the last 14 years. Some people really don't take the time to clean parts properly.

Still, though...We all have problems here and there. We don't build them in hospital conditions...LOL A piece of metal or grit has 1,000 places to hide.

If it was just built 3 weeks ago, why don't you take it back to them and let them fix it? It's obvious something isn't cosher.

Frank

 

LOL...I just noticed you have the same car I do.

Frank

 

[QUOTE]Originally posted by KeVMaN
[B]But thats what I already have. I ordered this one and they had me give them my gear ratio an everything. Its brand new, still in the package

Try that one.....

 

yeah. Mine has more than twice the miles yours does tho, and its in need of a paint job, BAD... I'll give that other governor a shot.