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#1
10-27-2005, 10:26 AM
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Junk 4L60e transmision
OK, I have looked everywhere that I can think and found nothing. I have a 97 Yukon with that wonderfull piece of crap transmission IMO, the 4L60e. I own a repair shop but we do not rebuild transmissions and it KILLS me to have to send things out much less my own. Anyway I have had this transmission go 2 times in 4 years and my trans guy rebuilds them for $800 new torque converter included. That is my price when I bring the trans to him so I labor it out myself. The thing is that I see tons of these 4L60's come through my shop and everyone is shocked at what that cost to repair. What I want to find out is what needs to be done to convert these trucks to a rebuilt 700 4r that I can get for $350.00 with a new converter included. Other then needing to wire up the lockout for the 700 I believe that the output shafts have different spines as well. Has anyone got any info on pulling this off or do I just need to tear this thing apart and do it form scratch solving each problem as they come up till I have the conversion completed?
Thanks in advance. Chuck 
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#2
10-27-2005, 09:30 PM
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Re: Junk 4L60e transmision
Chuck: Try calling Mad Dog transmisssions who specialize in Transmission conversions they might be able to assist you.
(727) 943-7742. Regards Bob
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#3
10-27-2005, 09:32 PM
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Re: Junk 4L60e transmision
Most common repairs for the 4L60 are reaction shell, shift solenoids and sticking valve bodies.
All 3 of these are relatively inexpensive repairs (valve bodies and solenoids only require pan removal) and the reaction sun shell requires a complete disassembly, but does not require a complete overhaul. Sounds like your trans guy isn't doing you right.
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#4
10-27-2005, 10:14 PM
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My trans guy is no keeper but he is one of the only guys in town that will even work on these things. I would like to find a better way to go but my hands are tied so to speak. Short of getting a service manual and an overhual video and doing one myself there is little else I can do. I'm not sure I believe that people in the biz tell me that "if you can rebuild engines (which in my bread and butter) you can rebuild transmissions" but I have been thinking about giving it a try. Maybe I will do a turbo 350 as I hear they are about the easyest to do?
Anyway this one that I have now has 1,2 and R but slips in 3 and has no 4. And in fairness to my "trans guy" I work this thing to death and when I started having trouble with it I went to do a fluid change and it was just fried as could be. It did last 4 years but still. I have a street car that runs mid 10's with a 700r4 that the trans guy I love builds here in town and I have never had a single problem with it, Rearends and axels are another story  Thanks for the replys and I will check with Maddog, he is the guy in FLA right? If so I hope he was able to stay dry during the lastest storms! Any other info that comes to mind please let me know. Thanks again, Chuck
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