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 Tranny upgrade

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BuickRM



Posts : 54
Join date : 2016-02-06
Location : Germany

PostSubject: Tranny upgrade   Mon 4 Apr - 6:04

Guys,
I´m owning my 94 BRwagon now since just some months and I would like to inform in advance how to upgrade the tranny first to recondition it and second which possibilities are there to reinforce it to accept a bigger Motor. I reckon sometime I want to rebuild the engine up to maybe 400 hp and the tranny should be adequate for this.
In Germany, we ( and especially myself Shocked) are way less familiar with automatic transmissions especially US brands, so it would be nice if you can advice some strengthend and well approved parts which replaces the ones which are prone to crack or wear out usually with more (or even standard) power. Is there a dealer or other specialist who can be recommended for those parts?

Thanks a lot for your experiences !

Udo
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phantom 309

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Posts : 5766
Join date : 2008-12-28
Age : 108

PostSubject: Re: Tranny upgrade   Mon 4 Apr - 9:55

An answer to this question, would depend on you level of mechanical expertise,.

Try this google search,. "simple 4l60e upgrades"

you will get more information than your head (english german translator) can handle, from mild to wild modifications,.

Transmission guys are like chefs,. each transmission tech has his way of building modifying transmissions, and lots of times they don't agree with each other,.

you can buy good simple upgrades from a company called sonnax,.

Make sure you stick with products compatible for 1994 4l60e's,. in 1995 they changed a few things around in the transmission and the pcm,.

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stewzer55

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Posts : 727
Join date : 2013-11-10
Age : 28
Location : New Carlisle, OH

PostSubject: Re: Tranny upgrade   Mon 4 Apr - 11:54

I thought BMW was using the 4L60e for a while, I do speak some German but its not related to car parts.   Sonnex makes good parts, and you will be able to get a 4L60e to easily withstand that power rating, later versions and derivitives had a 400HP engine in front of them.
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BuickRM



Posts : 54
Join date : 2016-02-06
Location : Germany

PostSubject: Re: Tranny upgrade   Tue 5 Apr - 14:32

stewzer55 wrote:
I thought BMW was using the 4L60e for a while, I do speak some German but its not related to car parts.   Sonnex makes good parts, and you will be able to get a 4L60e to easily withstand that power rating, later versions and derivitives had a 400HP engine in front of them.

Sonnax is a perfect side, guys, lots of thanks!

Looks like I´ve to start going familiar with this US stuff affraid
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lamune

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Posts : 653
Join date : 2014-05-09
Location : Seattle

PostSubject: Re: Tranny upgrade   Thu 7 Apr - 2:09

BuickRM wrote:
Looks like I´ve to start going familiar with this US stuff affraid

Ah, I make that face when I look at how the DSG in my VW works. It goes both ways I guess Smile
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BuickRM



Posts : 54
Join date : 2016-02-06
Location : Germany

PostSubject: Re: Tranny upgrade   Thu 7 Apr - 10:59

Unfortunatly, gearbox internals and techniques are way more difficult to catch as motors.....so if you are not the sharpest knife in the box, deal with engine technologies......as I do scratch Shocked Rolling Eyes but one shouldn´t give up hope.......
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lamune

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Posts : 653
Join date : 2014-05-09
Location : Seattle

PostSubject: Re: Tranny upgrade   Thu 7 Apr - 11:42

I've watched several 4L60E videos on Youtube. The rebuilders who share their videos make it seem really simple, and honestly it doesn't look as complicated as I envisioned. If I had one I didn't care about, I'd take it apart and get some hands-on (or hands-wet) experience Very Happy
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BuickRM



Posts : 54
Join date : 2016-02-06
Location : Germany

PostSubject: Re: Tranny upgrade   Thu 7 Apr - 13:06

I was just joking,, takes a bit of time to go busy with, but I agree basically. If you´re not under time pressure and take bit by bit apart, I think it should work. Anyway, to understand all functions of the hydraulic system is really challenging, and this demand has to be fullfilled to alter design features or even try to make them work better as sonnax did for instance.
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MalibuSSwagon



Posts : 577
Join date : 2014-01-12
Location : NH

PostSubject: Re: Tranny upgrade   Thu 7 Apr - 18:04

I'm actually looking into it as I have a 4L60E sitting in my garage from a Silverado I parted out, nobody's biting on buying it as a core since I'm not comfortable selling it as working with over 200k miles even tho it drive fine around the yard. Anyways I wanted to go thru the transmission, convert it to 2WD and maybe even throw some upgrade parts at it to replace worn out stuff. Then stick it under the bench as a standby for a swap or whatnot. Seems pretty simple from all the threads I've read and videos. Guess I'll find out.
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