Break in time on new tranny?
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From: Maryland
Break in time on new tranny? im having my 4l60e rebuilt, what is the recomended break in mileage if any before i start to spray it and kick it. any techniques like running through the gears or anything. dont wanna mess it up when i get it back and i heard the clutches need to be worn in. any ideas? thanks 
from what i heard thats true, but I would put some soft miles on it before ripping on it. it may take a day for you to get the proper fluid level. My built trans shifted very harsh when I first put it in the car and after about 200 miles of street driving it had softened up a little bit.
There are several issue on a new transmission . if the tranny is built dry then you definatley have to take it easy for the first few days , If its been run on a dyno not so much but still bear in mind that when you first fill a transmission the pump displaces the fluild in converter and churns up some considerable air into the fliuld , transmissions are hydraulic and like brakes air will decrease apply preasure ,
What we suggest is the following
put a little fluild in converter ,install trans , add six quarts, start car with wheels elevated and in neutral add till full , Run car through gears several times with car elevated , Stop and turn of car , check for leaks and check over installation let car set for aprox 45 minutes , start and check fluild in park , Fill as nessesary , Drive car relativly normal (reasonable )for first day let set over night start car let warm up then recheck fluild levels , then drive anyway you like .
performabuilttransmissions.com
What we suggest is the following
put a little fluild in converter ,install trans , add six quarts, start car with wheels elevated and in neutral add till full , Run car through gears several times with car elevated , Stop and turn of car , check for leaks and check over installation let car set for aprox 45 minutes , start and check fluild in park , Fill as nessesary , Drive car relativly normal (reasonable )for first day let set over night start car let warm up then recheck fluild levels , then drive anyway you like .
performabuilttransmissions.com
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I did some locking/unlocking with the convertor. About 50 of them. I had it on the dyno 2 days later. Then I ran the crap out of it. It's still going strong. I had it built by a known local shop. The shop doesn't care how much power or if you have any power adders. You still get a 12k-12month warrany on all parts/labor.
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Verdad Gallardo Thats the same warranty we have except no miles limit just time ,
www.performabuilttransmissions.com
www.performabuilttransmissions.com