Taubr Unit

iTrader: (32)

Over the weekend i overheard a conversation about 4l60s with stock pans burning up clutches for the 2-3 shift. Said when WOT all the trans fluid is at the back of the pan and no fluid for the 2-3 shift and that everyone should run a deep pan with a baffle. Anyone else hear of this?

performabuilt

iTrader: (25)

While with very very good 60 ft times yes its possible to evacuate the pan generally thats not and issue with the 2-3 shift and so has no effect on the 3-4 clutches. But a deep pan and not some fancy high dollar thing is a good idea and truck pan which are relativley cheap and a truck filter wil do the job very well

FLT

iTrader: (1)

Unless your dragin the rear bumper going into 3rd JT, I would have to say that therory is BS.

Taubr Unit

iTrader: (32)

lol , thanks Vince. thats what i figured. I was board at work so id figure id throw it out there.

PBA

This problem usually does not happen to the vast majority of street vehicles. But if you are doing a very quick 60 foot time, (1.4 ET or quicker) then it is possible to pickup air on the initial leave and it will most likely affect the 2-3 shift. If you think that this is happening to you, then overfill the transmission by 1/2-2/3 of a quart and see what happens. This almost always solves this.

performabuilt

iTrader: (25)

I would think it would be more apt in the rare instance it might occur to affect the 1-2 shift since thats when you would have the greatest G force. But agreed that adding 1/2 quart should solve it.

FLT

iTrader: (1)

I personally think that a pressure gauge would tell the truth if in fact this is happening. We have a vette that we use for testing puposes that cut's very good 60's with the wheels in the air and does not have this problem with a stock pan. I do know that the vette has a lower sump but the band in this trans has been in there for 3 seasons with the same reverse input drum. Absolutly looks perfect without any skids on the drum. I understand that this is not the 3-4 clutch, however with the way this car leaves, it does not do this. Just my opinion. Vince

performabuilt

iTrader: (25)

Agreed on the presure guage . It might be interesting to watch the guage in a car with the trans line at a fixed presue and a killer 60ft just to see if it can happen. I personally have not seen it , I have heard it spoken of several times but thats just talk. I have seen fluid a little low cause the pan to evacuate under those conditions but thats somethng different entirley as the 4L60E is very fussy about fluid level. I still like the deep truck pan when its feasable with the deep filter.

CRAZYCUBAN29

i put the wrong filter in a vette once and that fried the trans twice till i put the pressure guage on & noticed what was going on. 3-4 would fry just around the block!