how much boost?

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Jul 18, 2013 | 11:57 AM

snapcity

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From: Baton Rouge Louisiana

how much boost?

06 ls2
a&a v2 si trim

i have a 3.8" pulley currently and i made 7.3lbs of boost

if i drop down to a 3.4" pulley what boost gains should i expect?

Jul 18, 2013 | 10:25 PM

jon6.0

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From: Phoenix

About 10psi plus or minus 1psi.

Jul 19, 2013 | 06:15 PM

ravill

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From: Pacifica Ca

Hmm, I'm making 10 lbs with the 3.8 in my LS3

Jul 19, 2013 | 06:16 PM

jon6.0

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From: Phoenix

Quote:

Originally Posted by ravill

Hmm, I'm making 10 lbs with the 3.8 in my LS3

Every car is different. You have stock manifolds and exhaust?

Jul 19, 2013 | 06:26 PM

ravill

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From: Pacifica Ca

Yes sir stock manifolds and exhaust.

Jul 19, 2013 | 06:36 PM

Chance42

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When you change your exhaust, if you do, you'll drop a couple of pounds of boost.

Jul 19, 2013 | 06:38 PM

snapcity

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From: Baton Rouge Louisiana

I have stock manifolds and exhaust also

Jul 21, 2013 | 05:49 PM

Josh@AandASuperchargers

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Quote:

Originally Posted by snapcity

06 ls2
a&a v2 si trim

i have a 3.8" pulley currently and i made 7.3lbs of boost

if i drop down to a 3.4" pulley what boost gains should i expect?

For every .2" change in pulley size is usually 1.5-2# of boost change.

Going from 7.5" stock diameter balancer to 8" overdrive usually gains 2.5#s of boost.

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Jul 22, 2013 | 10:09 AM

NormWild

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From: Lehigh Valley Pennsylvania

Quote:

Originally Posted by ravill

Yes sir stock manifolds and exhaust.

Where'd you get your intake pipe with the welded MAF sensor hookup? I see them all the time, just never sure where to get them.

My boost did drop significantly after headers and porting my intake, making good power on 7 lbs of boost though on a 3.8, Meth is next, then maybe a 3.6 pulley.