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S475 on a 5.3 with T56

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Old Aug 29, 2013 | 03:28 PM
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Default S475 on a 5.3 with T56

Im still debating turbos and just thought Id get everyones opinion on this. Ive measured it out and I can definitely get the S475 to fit physically where I want it. My question is how well will this turbo perform on a stock bottom end 5.3 with T56? This will be mainly a street car and likely only roll race until I do something with the rear end. Goal is 700-750whp on E85. Cam I will be getting custom spec'd by Martin once I decide for sure on a turbo. BTW Im looking at the 83mm T4 turbine. If you dont think this is the right turbo, what would you suggest? Keep in mind I am somewhat budget minded and like the fact that I can pick this one up around $900.

Last edited by thendawg; Aug 29, 2013 at 03:55 PM.
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Old Aug 29, 2013 | 04:27 PM
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It shouldn't do too bad.
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Old Aug 29, 2013 | 04:32 PM
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Do it, then you can get a banner on your rear window saying "so ling gay boiiii" (leslie chow from hangover).
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Old Aug 29, 2013 | 06:05 PM
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im not gonna try to church it up to you
im simply gonna say i have a brand new in the box s475 borg warner turbo im selling

if your interested pm me
ill beat any price you can find online anywhere
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Old Aug 29, 2013 | 07:54 PM
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Forced Inductions sells them for less than $900. Def a good turbo choice also eyeballing this turbo but in T4. Hope the T56 has some upgrades.

Last edited by 2muchboostNY; Aug 30, 2013 at 08:18 AM.
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Old Aug 29, 2013 | 11:03 PM
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Watch this video of my s475 on 12 psi. T56, leaving at like 2500 rpm. Its a t6 96mm turbine, 1.32a/r with Martin species cam. Roll race its nasty but full boost before little before 4000 rpm. Its a stock ls1 besides the cam. But wouldn't think the 5.3 would spool much different especially with a smaller turbine. Probably spool faster.

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Old Aug 30, 2013 | 08:05 AM
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turbonetics 7675 would be a much better choice in my opinion for a t56
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Old Aug 30, 2013 | 12:05 PM
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Hmm, may be changing things a bit. I thought I had a buyer for my LS2 shortblock but they backed out. Starting to think I may just put pistons/rods in my LS2 and stick with the 6L As for the T56, its in a GTO so its an MN12, hoping itll hold up for awhile. Since I wont be launching it hard/dig race Im not too worried about it yet.
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Old Aug 30, 2013 | 12:58 PM
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Im building a 6.0l LS3 headed 226/229 cam in my 6 speed Z28 with an S475 83mm 1.10 T4. Hope it spools ok. Yours will prob be ok but I would surely run a T4.
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Old Aug 16, 2016 | 10:09 PM
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Originally Posted by Tally TransAm
turbonetics 7675 would be a much better choice in my opinion for a t56
I really hate to dig up dead threads, but I'd like to ask you why you say this?
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