twin question

turbostang7

turbostang7

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Apr 11, 2011
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Rexburg Id.
So I found an s475 with very few miles on it and couldn't pass up the deal, its the basic 75/88/1.32 turbo I am planning on doing a compound setup myself but have a question.
ny stock ihi turbo has some play, not bad but not new either, im sure it will be fine for quite some time but I want to cover my options.
I am wanting to know what will work well with that 475, spool like stock and tow well (not that I tow much lol) I have searched but haven't found any real good answers just this should work kind of thing.
I have a bd t3 pedestal already is that worth keeping for this project? If so what size turbo would work? Gated or non gated?
I have some ideas but want some input from those that have already tried things. Thanks guys!
 
turbostang7

turbostang7

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Apr 11, 2011
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Rexburg Id.
Forgot to add before someone asks trans is in the works and lift pump also.
Will the dsp5 tunes I have work for it for the time being? I don't need a ton of extra power while its snowy anyways lol
 
turbostang7

turbostang7

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Apr 11, 2011
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Rexburg Id.
It has little side to side no in and out, but more than a new one. I figured it would need gated, just curious as to the sizes, like 62/?/? What ar should the turbine be? Exhaust wheel size? I was thinking like a 64/71/.91 gated but just wanted opinions.
If its the smaller. 80 though the t3 pedestal I have would work but I don't know if drive pressures could be kept in check
 
$

$chultz38

Member
Jan 22, 2009
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If your stock turbo is good then leave it on the truck. I am running the same home built set up and tow a lot with no problems. Rob will have to adjust the tuning or it will be doggy/laggy. Is the 475 a T6? Stock BW part number is 171702. If so then you can run it non gated and be fine. IMO the 366/475 is not stock rod friendly and if you tune that set up for a stock engine whats the point as you really can't take advantage of all the power anyway without shorting you rods! Do the trans first!
 
turbostang7

turbostang7

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Apr 11, 2011
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Yeah its a t6, I know its not stock rod friendly but if my stock turbo goes bad I was just curious of the options available. And like I said trans is already in the works.
If I get that far I probably will build an engine and go that route
 
turbostang7

turbostang7

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Apr 11, 2011
239
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Rexburg Id.
Ha yeah "if I had the money" is the big thing there lol.
Im sure my stock turbo will last quite a while so I probably will just sell the pedestal to buy some pieces for the twin build. I just want a truck that's going to be a decent truck at the track for now.
 
Chevy1925

Chevy1925

don't know sh!t about IFS
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Oct 21, 2009
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Phoenix Az
Im really thinkin about that dts turbo here this summer. My stocker has just a hair bit of in and out play so i wanna address it before something comes apart.
 
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