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Old 05-03-2009, 02:30 PM   #3
piecesparts
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Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
Re: Thinking about the 5.3 swap in my 86.

Most factory computers for these trucks have the tune in them for the 4L series trannies. If you hook it up to an older 700R4 tranny, you need to look at what you want to do to control the tranny lockup. That is why the use of the later trannies is easier for many people.
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