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S475 800-900rwhp on LS3??

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Old 03-14-2015, 04:14 PM
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Default S475 800-900rwhp on LS3??

Can I meet my goal with this setup? I want to make 800rwhp minimum.
-S475 T6 96mm 1.32 a/r
-Aluminum 6.2L LS3 bottom end
-stock 317 heads
-BTR .660 springs
-BTR Stage 2 turbo Cam
-Dual walbro 450
-Siemens 80lbers
-built 4L80e
-Circle D triple Billet 258mm
Old 03-14-2015, 04:36 PM
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I don't see why not. I make 20whp short of that with a D1SC on stock bottom end on 11.3psi
Old 03-15-2015, 04:17 AM
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Yes I think so. My truck in sig made over 800 sae on 91 oct and meth with a little S475/83 1.25T4. Same turbo pushed my nova into the 8's at 158 mph.
Old 03-15-2015, 08:29 AM
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Sure should get up there man, im guessing by injectors you are on pump gas?
Old 03-15-2015, 12:39 PM
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Should be able to make 800 with that setup. Coming up on 900 to the wheels is going to be pushing it. I think that compressor will start to walk out of its efficiency zone at that point.
Old 03-16-2015, 04:23 AM
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I made 800rwhp on a SBE lS3 with 15# on e85, built 4l80 by jakes, single disk converter from ptc, ported heads tune and cam package from fasterproms. soft timing to hold it together. dual walbros, but im on id2000s because we arent staying at this power level much longer. I was running 80# siemens when we were on 93 13# around 715whp, had plenty of room for e85 and a few more #s.
Old 04-19-2015, 04:16 PM
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Picking up a S475 T6 1.32 96mm tomorrow. Picked up a precision 66mm wastegate last week
Old 04-20-2015, 06:16 AM
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Definitely think its doable.
Old 04-20-2015, 12:41 PM
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Yeah, I have to agree, I think it's do-able too.



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