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upgrades

1K views 2 replies 3 participants last post by  tactransman 
#1 ·
what are some upgrades outside of a programmer someone could do to a 4L80e, does anyone off a shift kit or performance mods to go with these? a buddy of mine bought an 01 hd 6.0 and was wondering. any info would be great. thanks in advance.
 
#2 ·
TransGo in South El Monte, California makes the kit, seems like everybody sells it; not hard to install, just messy, especially if you tend to spill stuff like I do.
 
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