Re: LS turbo advice needed...
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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build thread
1955 cameo turbo lsx
1993 K1500 Blazer 5.3/4L80e
2009 CTSV Sedan
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