S366 with 3" downpipes?

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Nov 26, 2015 | 02:52 PM

sdobart

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From: Bel Air, MD

S366 with 3" downpipes?

I'm looking to run dual T4 S366 on a forged 347. There's only room for 3" downpipes. How much back pressure/how many issues is this going to cause? I'm shooting for 850-950whp tops, not trying to break any records here. But I don't like the idea of building an inefficient setup.

Thanks.

Nov 26, 2015 | 05:17 PM

t-1

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From: colorado springs colorado

Shouldn't be an issue. Maybe step up to 3.5 if it's within a foot or two of the turbo

Nov 26, 2015 | 09:07 PM

coltboostin

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From: Avon, Ohio

890whp@23psi with dual 3's to a single 4 full exhaust (which on paper flows less than dual 3;s). You sould be fine. Never dyno'd it without the exhaust on to see if there was a difference though.

Nov 27, 2015 | 11:59 AM

stevieturbo

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From: Norn Iron

3" downpipes will not be any restriction for what you want.

Nov 27, 2015 | 08:36 PM

4Jenna

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From: AZ

I run similar turbos (Garrett 67s with p-trim wheels) and had no issues on 3" dp's on a 6.0.

Made 806rw on 14psi 1st tune up on car, lots left!

-Chris