LSX-coupe

iTrader: (1)

In n/a form how much HP will a single 3.5 inch mandral bent exhaust support?

1_fast_gto

iTrader: (1)

about a mil, mill 5 max

Fondle

iTrader: (4)

a lot

LS69TA

iTrader: (30)

A good bit. My buddy is running that with shorty headers and still broke into the 10's.

Pwebbz28

iTrader: (31)

why go through all the trouble? just do 4" its cheaper

Fondle

iTrader: (4)

i dont see how its needed, turbos with 3.5" down pipe can support over 1000hp

ZONES89RS

iTrader: (25)

3.2 would be like dual 1.75s, that would suck, thats why going from single stock 3 inch to dual 3 inch picks up like 350-400 RWHP. 3 inch is like 1.5 inch duals, everyone knows that.


On a serious side, it will support plenty for a street car.

Pwebbz28

iTrader: (31)

Because turbos and NA are the same right? Just because its "enough" doesnt mean it wont pick up power with more.

ZONES89RS

iTrader: (25)

A .5 inch gain in a down pipe for a turbo car can be a significant gain, so i would not lump Turbos in with NA or blower applications.

LS69TA

iTrader: (30)

4" takes a little more fitting to get over the rear axle without it hitting anything. I had a 4" Spintech before but with a bolt-on car. Sounded pretty good but wasn't loud enough for me so I went with 3" TD's and 1-chamber Flows.

5w20

iTrader: (21)

turndowns after the collectors on the headers, if you want performance and less weight too

Pwebbz28

iTrader: (31)

They will definately be the most fun in a parking lot when small kids walk by when you fire it up

ZONES89RS

iTrader: (25)

I have 1 chamber flows on the 89, but i am really wondering if there is more left with bullets out outlaws besides sound?

brian_rs/ss

not enough. it needs at least 4" to support my dick.

LSX-coupe

iTrader: (1)

Ok so im guess no definate answer. Its going on a trailblazer ss.

5w20

iTrader: (21)

no, we aren't a dyno nor can we make an educated guess because you provided too much info...

satxws6

iTrader: (1)

I may be wrong,but I just got my calculator out & figured
3.0 in single = 2.122 in duals
3.2 in single = 2.264 in duals
3.5 in single = 2.440 in duals
4.0 in single = 2.825 in duals

LSX-coupe

iTrader: (1)

Im thinking im just gonna leave my 3.5 and put a cut out at the y. Its going on a trailblazer.