What happiened!!!!!!!!!!!(4L60E)
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11 Second Club
Joined: Dec 2007
Posts: 66
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From: Somerset,KY
What happiened!!!!!!!!!!!(4L60E) I put a shift kit in 12months earlier. Then i changed the filter and soons as i did it started slipping in 4th then later in 3td. so i bought a hughes rebuilt kit. , put tranny back in and didn't have 4th. took back out .took it back. He went back though it still the same. then took to gmdealer checked for codes test drived and checked sol.every thing was fine. still no 4th. took back out took to gm. they went thougth it to make sure put togther wright. and it was. While this tranny was in 4th it felt like that it was being held back. if you stayed in it it would burnout the band.(3 times). So as wright know bought a tranny from salvage yard( came from a 99 silverodo with 4700 miles on it for 500.00 .Wanting to know what went wrong?? And is it worth beefing up knew tranny (street race a little And go to the track 3 to 4 times a year)But mainlya daily driver 
FormerVendor
Joined: Oct 2006
Posts: 3,123
Likes: 3
From: D-F/W
Holy Crap dude! How many dollars do you have wrapped up in that transmission?
Personally, I would never install a salvage yard transmission. But that's me. I would highly recommend you stop where you are and have a reputable performance transmission shop build you a transmission if you plan on doing anything other than put gas in it and go to school or work.
Good Luck and Happy Holidays!
g
Personally, I would never install a salvage yard transmission. But that's me. I would highly recommend you stop where you are and have a reputable performance transmission shop build you a transmission if you plan on doing anything other than put gas in it and go to school or work.
Good Luck and Happy Holidays!
g
A salvage yard trans will get you going however I agree with G you would be better off getting a trans from a reputable builder prefereably one of the sponsors on this site 
However as for the issue with your other trans I would venture to guess theres a crossleak somewhere allowing the 3-4 clutch oil to apply the reverse input drum clutch, Now on the 2-3 shift this would have no effect since they are actually running together.However once the band comes back on for 4th gear the reverse input frictions would be trying to force the drum to continue to turn and even though they have less area they are allready applied giving them the advanatage, When the band comes on it tries to apply and stop the drum but becomes heated and has less and less ability to hold, This is the binding brake feeling your getting. Then after a bit completley frys the band.
Now this is just a theory but thinking through how it all works its my best guess as to whats going on with the trans you have. Nothings put together wrong theres just 3-4 clutch oil going where it shouldnt into the reverse input clutch.
Hope that was a little helpfull
Frank
However as for the issue with your other trans I would venture to guess theres a crossleak somewhere allowing the 3-4 clutch oil to apply the reverse input drum clutch, Now on the 2-3 shift this would have no effect since they are actually running together.However once the band comes back on for 4th gear the reverse input frictions would be trying to force the drum to continue to turn and even though they have less area they are allready applied giving them the advanatage, When the band comes on it tries to apply and stop the drum but becomes heated and has less and less ability to hold, This is the binding brake feeling your getting. Then after a bit completley frys the band.
Now this is just a theory but thinking through how it all works its my best guess as to whats going on with the trans you have. Nothings put together wrong theres just 3-4 clutch oil going where it shouldnt into the reverse input clutch.
Hope that was a little helpfull
Frank
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Thread Starter
11 Second Club
Joined: Dec 2007
Posts: 66
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From: Somerset,KY
Thank's for the info . I agree about the used tranny. But had to do something for the time being.to get me by until after the first of the year. with X-mas almost here. But i have been looking pretty hard at buying a performabuilt tranny. and i have about 800.00 in both.trannys .I did all the hard work my self.taking it out and putting it back in.Got pretty good at to 90min top and have it on the ground by myself
Thank's for the info . I agree about the used tranny. But had to do something for the time being.to get me by until after the first of the year. with X-mas almost here. But i have been looking pretty hard at buying a performabuilt tranny. and i have about 800.00 in both.trannys .I did all the hard work my self.taking it out and putting it back in.Got pretty good at to 90min top and have it on the ground by myself
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