what do u pros think about this??

http://www.gearsmagazine.com/images/...2006_05_04.pdf

 

Looks like an interesting article. I'll let you know when I get a chance to sit down and read through the whole thing.

Frank
CPT

 

would it kill the trans? or actually is done right?

 

i manually shift mine accelerating but will never downshift as that is a big no no with these trannys.

 

yea i know, but that mod is for a full manual, which means you would have to downshift. Thats the question, would the full manual kill the trans, especially on the downshift

 

You can do the mods they show, They are relativly simple end result would be simialr to the transgo HD3 Your just sticking valves in various positions and rerouting fluid. Wether down manual downshifting a 4l60e is damaging is debatable. Yes it does seem they break more when you do that but then at the same time most people when they do that arent driving normally either lol. So is the the downshifting or just the general roughousing with the car. Though it is true that the stock PCM programing does take into account making the trans as they say idiot proof. Of course its like and old mechanic told me once if your worried about that hott rodding your car might break your picking the wrong hobby.
I have studied the PDF file and its interesting however. But remember with any full manula valv body kit you will no longer have any automatic functions though it is possible to retin lockup automatically with some tuning changes.

 

Pressure Control
Because we didn’t use a computer,
we had no line pressure control.
Line pressure was a constant 175 PSI
in all forward ranges. To the best of
my knowledge nobody makes a standalone
electronic pressure control unit.
However, Transgo makes a system that
uses a vacuum modulator that will
work with gas engines to control line
pressure.


i dont know how that would affect the tranny for dd duty. sounds like it would be a little hard on the pump sitting in traffic etc.

 

like it says transgo makes a vacuum modulator for the 4l60e, just get one of these and you wont be stuck at full line pressure

 

Actually if you purchase the transgo full manual valve body kit it comes with the vaccume modulator

 

yea i have seen the transgo kit, looked into it before the crap rebuild I got. So line pressure would only b the issue right? Thats wat i was thinking, the trans shifting at 175 psi all the time u know its gonna kill it sooner than later.

on a side note, how the hell do u get the servo retaining clip in place without the damn servo compress tool, any tricks? I can push the servo in but doesnt seem to reach the ridge

 

Double check your teflon sealing rings that they are in place if they are You just need to push harder. Also you might make sure the pin inst bottoming out on the band there are different lengths and though rare I have seen the longest once do that,


On another note actualy with the transgo you would have presure control via the modulator. I have used the kit several times and it seem to work quiet well, I do use the lighter shift settigs with it however and leave the accumulators stock.

 

Vacuum modulators in a 4L60E will certainly accomplish one thig...They'll burn it up very quickly! It's not Theory...It's a FACT!

Frank
CPT

 

Did you grease the return spring to the back of the servo? I've seen the springs hold the servo from going in. You can also put the spring in the case first, and let it rest on the case.
Try installing the servo without the 4TH piston and cover first. Make sure it slides freely...All the way in. If you put new teflon rings on the 2nd piston, they can be a hassle. Take the ring off and wind it tighter, and then reinstall it. You can also use a little grease in the ring groove to hold it n lace. Make sure the servo bore is lubed up, and you've got the correct O-Ring on the servo piston iner housing. If you're using a popular kit, it should be either red or green. The cover O-ring is blue. You should be able to tap the cover with a hammer to get it down far enough to get the snap ring in. you will probably have to hold it there with the handle of a hammer. Once the ring is in, make sure it's seated. Take a flat screwdriver and tap the ring around the groove. This will assure it is.

Frank
CPT

 

awesome, thanks for the replies guys. I just removed the whole thing from the 95 trans, everything came out, spring, seals all look fine also. I think like u guys said I need to just push down harder on it to install the clip. The seals have no cuts or nicks, so they should b fine right?

 

I am not a big fan of the vaccume mod normally either however with a full manulal Valve body and no PCM its the only choice for presure control and still and improvement over max line all the time.