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Old 01-15-2011, 09:31 AM
falcone falcone is offline
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Originally Posted by Crosley
Going to a larger boost valve will increase clunk via higher pressure. V6 engine typically had smaller boost valve

The sonnax valve for over run applied in additional gears will increase clunk.

I suspect there is a problem in the drive line area if this clunk is as bad that you indicate.

i would keep the PWM lock up setup for the converter. If your programing has the converter clutch applied at lower speeds via PWM logic, you will not be happy with the on-off setup valve you mention Sonnax or TransGo. The vehicle will feel like it is dogging out as the converter clutch is applied fully, not slipping.

In the 1995 trans , it is simple to block the PWM valve and have the on - off feature. I would use the TransGo valve if you decide to move forward.

The Sonnax lock up valve for the pump is a fine addition, they work well.
Hi, the clunk isn't that bad or loud but its there under light driving. its more of an annoyance than anything else. but if i drive with more gas under my foot you don't really notice it. I know its coming from the tranny because i checked everything. and I also found a GM tech service bullentin on it and explains it too. but it says nothing should be done about it and is normal...also Sonnax makes a servo release "check valve" would this help any light clunk noise?(see attachment below) and the last thing i heard is that i can grind down the side servo pin and put a white 1-2 servo spring and a purple on the 3-4, is this true?

Yes my convertor has the PWM set up. however the bore where the valve pulses is starting to show a little wear. I would rather just convert it to a On/Off style by plugging up the bore. i think the valve pictured above should do the trick right? and would elimate any movig parts right? I also forgot to mention that the truck has 3:73 rear gears in it so that would help with the way the of the on/off engagement feel im guessing. plus its a truck so a little harsher feel is not critical. So why is the trango valve better? and how does the Transgo valve work exactly? how does it compare to the other O-ringed valve that i want to use? i do not see any O-rings on it ( see the atttached picture) wouldnt it seal better with O-rings?

and lastly does the new Transgo separtor plate require any drilling in it or does it already come predilled?
thanks so much
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