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4l60e valve body

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Old 03-22-2013, 07:38 AM
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4l60e valve body

What are the differences in the valve bodies? I need one for my 95 so I need to know what to look for. Will any other years work?


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Old 03-22-2013, 08:31 AM
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Re: 4l60e valve body

Im by no means an expert on these trannys. But I know that the 95 was was in a class of its own because of the TCC PMW they used that year. Im not sure if the valve body was unique for that year tho.

Im sure Frank at CPT could give you a definitive answer on this.
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Old 03-22-2013, 08:46 AM
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I know it has to be pwm. I will see what frank says.


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Old 03-22-2013, 09:31 AM
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Re: 4l60e valve body

Here's a shock for you. Many people don't know that the actual '93 (truck) and '94 valve body castings are the same as the '95. The tcc regulator valve is a 1 piece valve in the '93/'94 and will need to be changed to the '95 style. Eventhough the '95 uses a PWM solenoid, the '93/'94 still had the place to mount one.
You can't interchange '96 or later with a '95 because the 3-2 downshift valves are different. The change also required a different plate, solenoid and wiring harness. On '93-'95 valve bodies the 3-2 valve is 2 pieces and it's held in by a roll pin. On '96-up, it's a 1 piece valve. The easiest way to identify the 2 is to pull the 3-2 solenoid out. If the valve behind it falls out, it's a '96-up (providing it's not stuck). If the valve is held in by a plug and roll pin, it's a '93-'95.

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Old 03-22-2013, 11:14 AM
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Ok, lol don't really know much.

All I know is I would prefer to build my own Trans but I attempted it before and it didn't work right. Just had it taken apart and built locally and found two things that were wrong.

Not sure what the part was called in the very bottom of the case but it was cracked very badly. Also I had the 3/4 pack installed upside down. Not sure how that happened. I had no reverse and i'm nit sure what else was wing with it. It is in my 95 Camaro Niue since the rebuild and I have put about 100 miles on it with no issues yet, and I only say that because after reading the huge what broke in your transmission sticky, what not to use, was used in this rebuild. Like a transgo shift kit and the springs put back in. it also has a nine clutch pack.

The one that was taken out of the Camaro, i'm pretty sure has burnt clutches and that's the one I would like to build but don't have enough money to have professionally done. I also need a valve body as I used it in the other transmission. I wouldn't mind attempting again but I don't have the special tools.


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Old 03-22-2013, 01:15 PM
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What would be a good band? Heard kevlar is to hard. What about alto red?

Also what's better, alto red or the z pak? Or any other suggestions


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Old 03-22-2013, 02:07 PM
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Re: 4l60e valve body

Alto red for the band. Kevlar is junk. Alto red and Z Pak are old school for the 3-4 clutches.. Nobody uses them anymore because they're too thin. When you try to jam 9 clutches where only 6 came out, you have to make the steels too thin. This makes them more prone to warping. 90% of the Alto red packs or Z Paks that we see come out are all warped up. The best way to go is 6 700R4 thickness kolene coated steels (.080") and 7 High Energy frictions with stock top and bottom pressure plates. If it's too tight that way, we substitute an '080" with a '063".

Frank
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Old 03-23-2013, 08:24 AM
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Re: 4l60e valve body

Just a question, and I know how everyone feels but money just doesn't allow it.

The 3/4 burnt up in this trans and unless I see something that is definitly bad, how do you think changing just the clutch pack will turn out? Are the teflon seals reusable if not damaged? And i have read before that you said to keep the springs out?
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Old 03-23-2013, 09:36 AM
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Re: 4l60e valve body

There are numerous things that lead to premature 3-4 failure. Bad teflon rings, worn bushings, pressure problems, worn lip seals, leaking check *****, etc, etc. You have to be able to identify WHY they went bad. Yes, teflon rings can be reused if the air check is good.
The only things those "load release springs" will accomplish is tearing the 3-4 clutches up again.

Frank
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Old 03-23-2013, 09:44 AM
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So if I buy just a stock rebuild kit minus steels, that would work? Ste the steels usually reusable? I'm just very tight but it needs done because the cheap one I bought on Ebay hasn't worked right since I got it.


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Old 03-23-2013, 10:10 AM
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Re: 4l60e valve body

The steels will need to be replaced also. Most likely so will the top and bottom pressure plates.

Frank
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Old 03-23-2013, 10:48 AM
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Ok I will look for a kit.


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