anyone got pics of 3.5 inch true duals?


David

 

why would you need duals that big? seems like way overkill to me

 

Yeah all motor should not need 3.5" duals. I would go with 3" unless you have a really good reason.

 

If collectors are 3", why are you increasing to 3.5"?

 

I just found that I did not respond to this thread, the collector will be 3.5 inch. Normally aspirated engines need more exhaust than FI or nos applications, I have since decided to build a 3.5 inch Y pipe into a 4" Mufflex.

David

 

Some of us use 3.5" collectors .

FYI: I'm using a 2x3.5"->4" single merge.

Ryan

 

Pro Dyno in Phoenix, AZ specializes in custom exhausts. They have a killer true dual for F-bodies that utilizes an "X" pipe and Borla XR1 mufflers, Check out their website http://www.prodyno.com/index2.html Just so you know, the true duals end before the rear axle. And they also have a killer true dual for Corvettes too.

 

 

how much hp you making? dual 3" will be plenty for 500rwhp....

 

On more than a few muffler sites, it is stated on charts that 500 rwhp(650-700 flywheel hp) needs a dual 3.5 inch system or one 5 inch single.

David

 

Well one of two things is apparent here, either you know something I don't, or I know something you don't.


David

 

ive always heard the exact opposite, any FI or especially NO2 car needs big high flowing exaust.

 

ANd why would you think a NA car wouldn't? Just asking. The more free flowing the exhaust is the less the piston has to push it out on the exhaust stroke. The closer you can get to being uncapped the more power a NA engine will make.

David