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My buddy has offered me a free 4L80E. Only problem is that it's out of a 4WD Suburban. Can I use it in place of my current turbo 400? do I have to change the main shaft along with the tail housing? Can I use a mechanical speedometer with the 4L80E? Any technical input is greatly appreciated. Thanks

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Well the good news is that the 4l80E is a good transmission that can handle a lot of power and torque. However you need to get a stand alone computer and harness which can cost a pretty penny. To answer your concerns about the tail housing, I can't really help you there. How bout ya give a trans shop or JET performance a call about it?

later
J.J. Fig

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One of the hotrod mags did a trans swap issue over the summer with all the details. Let me know if you have a fax and I'll send you a copy. If you don't, let me know that too and I'll see if I can summarize the info here.
jmw
 

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Jimmy,
January 2000 issue of CHEVY HIGH PERFORMANCE magazine has an article in it about swapping trans from guides to 4L80Es and manual transmissions as well. It is a good article and should answer a lot of your questions. The Jan. 2000 issue should still be on the news stand or book stores.
The # is 1-800-800-2438

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JR
70 396SS El Camino #'s Matching.
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Well GM offers a kit but it just means that you use a stand alone computer that only controls the tranny. It is impossible to run the 4L80E without a computer, everything in this trans is controlled by electric solenoids in one shape or form. Believe me I spent enough time under a delivery van at work playing with one of these and if you don't have the electronics right it will not work!!!

later
J.J. Fig

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