FORCED INDUCTION Turbos | Superchargers | Intercoolers | H2O/Meth Injection

what size turbo?

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Old 08-25-2011, 06:19 PM
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yup the BW sound like a semi truck. Thats the turbo on my 370 right now^^
Old 08-25-2011, 07:17 PM
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so would the S400 75/83 SX3 T4 1.10 A/R be ok on a 370ci motor or would i have to turn the hell out of it to make the power...750rwhp is what im looking for...i will be running a 60lbs inj and a return fuel system...and stock intake..228 232 cam..

Originally Posted by kbracing96
That S480 with the t6 1.32 will have the big 96mm turbine. It will make the most power, close to 1000 but a little slower spool. Mine is a S480 with a 83mm turbine and was running it with the T6 1.10, but I have a 1.0 T4 housing I'm gonna put on it when it goes back on these pipes.

FYI, a S400 75/83 SX3 T4 1.10 A/R is a 75mm compress, 83mm turbine with a T4 1.10 a/r.

S400 75/87 SX3 T4 1.10 A/R is a 75mm compress, 87mm turbine with a T4 1.10 a/r.

Here is how my 346 spooled the T6 83mm turbine in the T6 1.10 a/r...



Old 08-25-2011, 07:44 PM
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im building a 406 and im trying to decide on what turbo to go with. not looking for huge numbers just a fun truck thinking of tc78 due to cost and size, what yall think?
sorry to hijack.
Old 08-25-2011, 08:08 PM
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welll i had a 408 with a tc76 and i killed it...it spooled so fast it was like a radix.. i would go with a bigger one for a 408 again...nothing less then a 88 or so but thats where iv been...iv just been out the game for 2yrs almost and dont know what new out there...lol

Originally Posted by cleonard
im building a 406 and im trying to decide on what turbo to go with. not looking for huge numbers just a fun truck thinking of tc78 due to cost and size, what yall think?
sorry to hijack.
Old 08-25-2011, 08:55 PM
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by killed you mean like over spooling it? i like instant spool but dont want to hurt it just playing around. will the 78 be any better or near the same?
Old 08-25-2011, 10:01 PM
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Depends on what turbine wheel it has. They have a few different sizes. Mine has the 68mm wheel on it.
Old 08-25-2011, 11:13 PM
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Originally Posted by cleonard
im building a 406 and im trying to decide on what turbo to go with. not looking for huge numbers just a fun truck thinking of tc78 due to cost and size, what yall think?
sorry to hijack.
GTS76 is the smallest I would go the 68mm exh wheel T78 is marginal on a 370 even. A S480 would be good on a 400CI.

Originally Posted by 05crew
welll i had a 408 with a tc76 and i killed it...it spooled so fast it was like a radix.. i would go with a bigger one for a 408 again...nothing less then a 88 or so but thats where iv been...iv just been out the game for 2yrs almost and dont know what new out there...lol
Yea it burns it up. I blew up 3 in a row on my 6.0L trying to make boost in high altitude. Great turbo for a 370CI daily driver... The 4.8L guys should be all over the Tnetics 68mm exh wheel. It would work perfect for that...
Old 08-26-2011, 08:30 PM
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what you think KB?
Old 08-27-2011, 09:12 AM
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Originally Posted by 05crew
what you think KB?
S480 with the 83mm turbine and a T4 1.0 a/r
Old 08-27-2011, 11:09 AM
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Originally Posted by kbracing96
S480 with the 83mm turbine and a T4 1.0 a/r
Is that better then something someone else may have ordered?


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