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Old 04-20-2005, 05:42 PM
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Automatic transmission rebuilding - difficulty factor?

How would you guys rate the amount of difficulty in rebuilding an auto trans for a performance application? Could a newb with otherwise good mechanical skills tackle this armed with a good tech book? (recommendations on books would be sooooo nice....) Thanks in advance.

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Old 04-20-2005, 05:49 PM
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Great search topic.
http://www.hotrodders.com/t59262.html
http://www.hotrodders.com/t42046.html
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Old 04-20-2005, 06:44 PM
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heh, heh....I've been using the search feature lately forgot to use it this last time....Thanks. It looks lie you have rebuilt many slushboxes in your time Willy's, do you think the 4L60E transmissions are any good? I searched that and found only tech questions.
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Old 04-20-2005, 07:09 PM
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My $0.02 on the 4L60E is it is a very good transmission. There had been an issue with the sun gear shell stripping out but that was resolved with a material change and radius added. A performance rebuild would more than likely include the sun gear shell.

As for difficulty for a newbie with a good tech book and mechanical skills - the trickiest element would be assembling the components without rolling or cutting a seal. You can follow the procedures but much of the success is a "feel" thing.

If so inclined I would go for it. Worst you can do is to have to do it again.

Hope that helps.
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Old 04-20-2005, 07:26 PM
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Thanks A.D. Would it be safe to say a total rebuild based on a performance version be less than $750 to $1K?? I'm still weighing out the option to swap to a manual. (but I have three different slushboxes on hand I could rebuild)

Cheers!

Gear
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Old 04-20-2005, 07:39 PM
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My guess would be the hard parts would be less than what you have listed (US Dollars) not including the Torque Converter. Search this forum for recommended parts (I remember some post's) and do some price shopping sticking with well known brands if you can.

Remember the E part of the 4L60E means electronic control of the transmission. If you are putting the trans in something other than a factory system you will need a controller to handle the shifting. Hughes sells one and you could check these guys too - www.bowlertransmissions.com. This will add cost.

If you don't want an electric controlled transmission a 700 R4 would be the way to go.
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Old 04-20-2005, 07:56 PM
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Well, the 4l60E is just GM's new name for the electric 7004R (they decided to rename transmissions instead of designing car anyone would want) and I have rebuilt a couple of 7004Rs with zero problems so I can safely say you can do it to! Get one of the videos (Eastwood?) and it is a relative snap. Just takes a novice a couple of weeks where pros like Crosley could do it in an afternoon.
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Old 04-20-2005, 08:13 PM
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TransGo has a good shift kits for the electronic trannys.

Sonnax has several updated parts for them

Building a 4L60E from the point of what version 4L60E you have can be a challenge .... this applies to the valve body.

Lockup systems were changed and there are different OHM rated solenoids on them too.

Replace the bushings in this tranny!
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Old 04-20-2005, 08:24 PM
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hey...thats terrific guy's. Thank you very much for the info (not to mention Patience) Your answers have enlightened me a little bit regarding these different models and mysteries. As much as I want a manual, I have so much left to do on the truck plus three trannys on hand....its looking like an automatic version.

Cheers all....

Gear
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Old 05-10-2005, 12:41 AM
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Seeking Help Trans / Rear

MONTE CARLO 87 SS AEROCOUPE 350 STROKED B 30 700R REPLACEDtwice W, 400 t3500 stall T STILL KILLS 3RD GR/out again WHAT TRANNY KIT AND REAR 456?
Quote:
Originally Posted by Gearhead forever
How would you guys rate the amount of difficulty in rebuilding an auto trans for a performance application? Could a newb with otherwise good mechanical skills tackle this armed with a good tech book? (recommendations on books would be sooooo nice....) Thanks in advance.
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Old 05-10-2005, 09:00 AM
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I don't understand your post


Quote:
Originally Posted by riceeater
MONTE CARLO 87 SS AEROCOUPE 350 STROKED B 30 700R REPLACEDtwice W, 400 t3500 stall T STILL KILLS 3RD GR/out again WHAT TRANNY KIT AND REAR 456?
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Old 05-10-2005, 07:24 PM
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Replace the bushings in this tranny!

Crosley,
Do you use a Cape chisel to cut out the bushing or just push it out?
How about installing it?
Do you use a bushing driver?
THANKS.
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Old 05-10-2005, 08:45 PM
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I use a chiesel from snap on that is listed as a muffler chiesel if I remember correctly. I custom grind it for cuttin bushings out. I need to be careful to avoid cutting the wall of the piece I am cuttin the bushing out.

I use bushing drivers with a ratcheting arbor press to install new bushings. i press bushings in , not with a hammer.... just the way I have done it for a few decades



Quote:
Originally Posted by scrot
Crosley,
Do you use a Cape chisel to cut out the bushing or just push it out?
How about installing it?
Do you use a bushing driver?
THANKS.
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