Quote:
Originally Posted by akdg87
i would get a 7875 turbo- vs racing is very popular and very little issues from what i have read. I have their borg warner s475 knockoff on my truck and will be upgrading to a bigger version over the winter.
10-12 psi is fine with stock ring gap. I was running 20 PSI with my stock 5.3. Good tuner will go along way, definitley do your research there because there are some hacks.
obviously plan for all the incidentals- injectors, wideband o2, valvesprings for starters. A custom stall converter will make a huge differnce as well (be forwarned they are spendy for the 4L80).
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I have a set of PAC1218 springs already and was planning on either 60 or 80 lb injectors with a big Walbro pump. Is a wideband required to run a turbo? The o2 sensors are one of the fuzzy things for me. Location, number, and style. Kind of assumed you need one in the downpipe but was thinking you don't really need 2 since there will only be one exhaust pipe.
The turbos I have been looking at are the VS billet 7875, the Huron Speed billet 7875, and the Precision LS cast 7675. The price gap is a consideration but I definitely want a setup that will last a while.