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JY5.3+LS9cam+s475+22lbs of boost in a 88GT

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Old 07-05-2012, 03:15 PM
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Originally Posted by turbocamaro125
what kinda wastegate you using?....after seeing this build im holding off on the 370 and got a 5.3 all cleaned up and gonna use the 91...lol 1.0a/r t6 with a 98/108 exhaust wheel...should be pretty fun once it spools lol
x02 60mm like 140 dollars i think from VSracing.
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Old 07-05-2012, 03:15 PM
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Originally Posted by NemeSS
Ever thought of using a bosch/ forge audi diverter valve?
Just plumbs back into tract somewhere and takes some stress off the compressor.
I have one for my build. Not a big fan of the bov sound
nope, i dont even think about it. lol
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Old 07-05-2012, 03:15 PM
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all i can think about is how awesome that CHEW CHEW CHEW CHEW

sneezing turbo is
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Old 07-05-2012, 03:17 PM
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oh yes, this car now has a 5.3 with the zr1 cam, still the s475, circle D converter now, and my friend just welded in a roll cage...

still waiting on the built trans with the brake to finish it off!
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Old 07-05-2012, 04:32 PM
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In for the results!
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Old 07-05-2012, 04:49 PM
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Denmah what are the specs of the s475?
83mm turbine? Where does it start to spool?

I'm in for the results also
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Old 07-05-2012, 04:54 PM
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He said it was 1.05 t4...so prolly has a 83 wheel. Think he said it full spool by 4500.
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Old 07-05-2012, 05:10 PM
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its the 75mm S475 1.05 AR divided inlet

on the 4.0 it was full tilt buy 4500 the 5.3 will be a different ball game.

trans guy called today ironically and said its done, hes gunna pick it up next week.
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Old 07-05-2012, 05:11 PM
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Thanks, I reread the thread and didnt see full specs. I'm going with the same Turbo on a 1.10a/r . Thanks again for clarifying.
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Old 07-05-2012, 05:17 PM
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I think I may have read it in a diff thread...I built a buddies car with a 4.8 ls9 cam s472 1.10 83mm wheel and t56 3.42 gear in 3rd it makes 1 psi at 2400 and full spool by 3600 12.5psi. Once the turbo gets lit at about 8psi it really starts to go hard...he needs an auto and it would be nasty
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Old 07-05-2012, 05:20 PM
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Denmah how do u like the x02 gate? Would you trust it on a $10,000 dollar motor?...lol
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Old 07-05-2012, 05:35 PM
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Originally Posted by turbocamaro125
I think I may have read it in a diff thread...I built a buddies car with a 4.8 ls9 cam s472 1.10 83mm wheel and t56 3.42 gear in 3rd it makes 1 psi at 2400 and full spool by 3600 12.5psi. Once the turbo gets lit at about 8psi it really starts to go hard...he needs an auto and it would be nasty
Thanks, I'm pretty stoked about my build but it just seems like forever, rent in LA is insane. But soon ill know what boost feels like. I just hope my t56 enjoys it too .
Ill stop taking up room
Sorry denmah.
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Old 07-06-2012, 01:35 AM
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In for the finished setup. You guys do some badass work and in short time. Next summer we should have a couple turbo 4.8/5.3s running around here, thanks for the inspiration
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Old 07-06-2012, 02:39 AM
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So I guess the football in the spring doesn't work the greatest on the street! Love the build man!
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Old 07-06-2012, 07:10 AM
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Originally Posted by turbocamaro125
I think I may have read it in a diff thread...I built a buddies car with a 4.8 ls9 cam s472 1.10 83mm wheel and t56 3.42 gear in 3rd it makes 1 psi at 2400 and full spool by 3600 12.5psi. Once the turbo gets lit at about 8psi it really starts to go hard...he needs an auto and it would be nasty
yeah i mean this car is an auto and now has a 4k stall, so its in boost whenever you want even at a dead stop
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Old 07-06-2012, 07:11 AM
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Originally Posted by turbocamaro125
Denmah how do u like the x02 gate? Would you trust it on a $10,000 dollar motor?...lol
absolutely, ive installed these wastgates in....

10 or more cars? one of our cars uses 2 of them (one as a spool valve)

and they are awesome. never had a single issue.
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Old 07-06-2012, 07:12 AM
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Originally Posted by alexcoreas
Thanks, I'm pretty stoked about my build but it just seems like forever, rent in LA is insane. But soon ill know what boost feels like. I just hope my t56 enjoys it too .
Ill stop taking up room
Sorry denmah.
ide say shift slow and let her eat, hoping for the best haha
not a problem
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Old 07-06-2012, 07:13 AM
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Originally Posted by CameronVic
So I guess the football in the spring doesn't work the greatest on the street! Love the build man!
oh it works great! it keeps the car level so the power can work on the tires instead of unloading the car all over the place.

it will eventually need a full rear treatment but for now its working really well
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Old 07-22-2012, 03:57 PM
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19lbs of boost with the 28 inch slicks on the highway

its amazing to watch a datalog of the 118 inlet air temp, drop to 80 as soon as the methanol kicks on at 10psi.
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Old 07-22-2012, 07:08 PM
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Details on the fuel system?

Corvette fuel filter/regulator? Stock mustang fuel lines? Etc...
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