now do these have to be matched in order to shift right?

 

they don't

 

Yes, they do have to match.

 

now could this be causing my car not to want to shift into 3rd at WOT? the car had the g92 option and this is the 6th tranny i have installed on this car so there is no telling what govener is in it. if i leave it in 1st and nail it, it will never shift out of 1st?

 

The governor absolutely does not have to match anything. I have 3 different governors from 3 different applications that i swap into my tranny depending on how i want it too shift. I have a TBI governor for cadillac smooth auto operation by short shifting the big converter, then i have my stock Z28 governor that gives nastier part throttle response but shifts dead nuts where i want at WOT, and i have what i once Id'd as a V6 governor that i got with my current tranny that shifts 6k at WOT which will come in handy down the road.

The governor is just a centrifugal dog that fights line pressure in the tranny and when governor speed overcomes line pressure for that gears set of holes, it shifts. Thats why at light throttle it shifts early (line pressure = low, so governor wins easy) and at high throttle it shifts late.

True, if you swap gears and keep the same governor the timing is going to feel different and may be way off. Also, depending on how the tranny is built things can be completely different. The used fairbanks tranny i'm running now shifts 3-500rpm higher ( iforget exactly) with my stock tranny's governor than my stock tranny did, which is easily attributable to no doubt higher line pressure (which is also why the part throttle got nasty)

But to answer your last question/idea, no the governor is not causing your problem. If the governor boogers up, thats it, you'd be boogered across the board. I don't think it would just quit on one gear at one line pressure. And besides, my stock tranny also had the famous no 2-3 shift at WOT and that governor works fine in the new tranny.

No 3rd at WOT implies either 3rd is on it's way out, or a valve in the VB is sticking. If it's the former, it's rebuild time. If it's the latter, pound your head onthe wall and cry because i've had 2 trannies that have done this now, and while the latest may have been 3rd on the way out, my old 85 did it for years intermittently and on hundreds of passes down the strip, and you can't convince me that a dying tranny lasted through that abuse. I searched and begged for help on this, but i guess the secret workings of a VB must be like being a mason. If you don't know, you just don't know. I mean, why would a tranny guy tell you how to fix a common 700r4 problem when he can just tell you that 3rd is dead and you need a rebuild? Even if he isn't the one rebuilding it, he has to look out for the other members of the clique that know how to fix it by making sure you pay someone. Its my best guess anyway as to what's up, maybe i'm just bitter.

And c'mon Leo, you must be smarter than that. Unless you have never been near people racing automatic tranny's, how could you not know that the easiest way to adjust shift points is by trying other stock application governors. Sure you can tune a governor yourself (which is exactly the same as swapping it with another one anyway), but since you shouldn't mod your only governor in case you / it screws up you might as well buy / scrounge something from an app that shifts about where you need.

 

"tranny goveners and rear end gears?
now do these have to be matched in order to shift right?

Ed, you wrote "No, they don't" Then in trying to prove you are right you say "True, if you swap gears and keep the same governor the timing is going to feel different and may be way off".

I do not mind exchanging ideas but what is with the smart-*** remarks? From the Moderator no less? You have clearly contridicted yourself. (See above). I have posted a number of times that it is critical to have the correct Governor to get optimum shift timing and therefore the best use of the power curve of your engine. I don't care if you buy a new one, swap one out of another unit, cob one from parts or buy a calibration kit but in short YES, the Governor MUST match the gears, not to mention the power curve of the engine. If it doesn't matter then get one from a Diesel and then tell me how well it works.

86IROCTHD:

Yes, the wrong Governor can cause your complaint BUT it would be affecting more than one gear. The most likely problem is that the 3-4's are on the way out and aren't holding at WOT.

Ed: I am sure you know this but take the Z-28 Governor that shifts just right at WOT and start swapping springs. Use one heavier one first and go from there. That is how you work with the part throttle timing. It will likely get you to where you don't have to swap the wrong Governors in and out. But then through your bitterness you wouldn't realize someone in the "clique" was offering free help. I don't know why I keep coming back in here. It is just not worth it. There is always someone who doesn't know, OK the second thing about fixing Trannies who just has to but heads with me. Sorry for the good folks in here but the few make it not worth while, including the arrogant Moderator.

 

ttt

 

hey man thanks alot... how can i adjust that to where it will help me more for my power band? according to desktop dyno i should shift about 5500 max HP at 5000 max torgue id 2000 rpm what should i do to help resolve this problem.... this tranny was rebuilt not to long ago by allstate transmissions in dallas wouldnt have been my 1st choice but i was out at a state vica contest and my mom took the car up there. had areally nice shift kit installed into it and when i flushed the tranny it wasnt dirty still pulls real hard in all gears when they are in them but like i said the 2-3 shift doesnt like to happen... i dont know when it goes from 1-2 cause i let off and then get back into it to get it to shift right where i want it to then back on the bottle.... tranny feels strong went 8.8 with a 125 dry shot 28X9.5 et drags and 3.08 gears so i know i was pushing the4 drive train... but thanks for all your help.... what else can i do to this tranny to "beef" it up? i want a transgo shift kit/reprogramer and a stall but what else should i get???

thanks

 

Start with the TransGo Reprogramming Kit, 'Vette Servo and go from there. This is because the shift points will tend to drop with less slip (not taking into account the repairs required). Then you can start by getting the WOT shifts where they should be via weight changes. After that go for the springs to get the part throtte shifts in line. Do NOT go for the "hardest" shift since you will break parts with slicks.

 

I would put in one of my Trans-Go Performance Shift kits combined with the Trans-Go Junior Shift kit & Corvette servo and larger boost valves first. Then start trying to get the WOT shifts points worked out. As Leo said the governor controls a lot of this, you might get the governor weight & spring kit to help you out on this. If I can be of help, let me know?

 

Not taking sides or anything but when i installed the 700r4 in the Firebird (original 83 700r4 from a caprice) I nabed a governer and tail housing from an 86/88 V6 bird that had 3.23 gears my car shifts perfectly under normal and WO shifts at 5500 probably 6K (factory tach) why would a 3.23 govener give me perfect shifts with 3.42's? I guess I'm missing something here SSC--------------------------------(the boat)

 

Having the "correct" Governor does not always mean having a specific one for a given year/axle/engine. What works right with your combo is what matters. The Governor in a different F-body might not be "just right". Not a lot of specifics, just the theory behind it. Also note that often a lower shift point will do wonders. If the engine stops pulling or the RPM's flatten out at all you need to go lower on the shift points. This is just as important at part throttle as at WOT, if not more so since you are driving at that most of the tome.

 

thanks guys for all your help i will look into all of this after i get my new motor in the car... poor 305 let me down guess a 125 shot of nitrous and low oil pressure doesnt mix lol...... now time for the 355