Side Pipes / Headers Power Gain?
Thread Starter
Racer
Joined: Mar 2004
Posts: 484
Likes: 0
From: Guston KY
Side Pipes / Headers Power Gain?
Anyone ever dyno'd a set of hooker sidepipes / headers on a relatively stock small block and can tell me the power gains?
Anyone want to guess?
How about a good header dual combo?
Right now I have a Stock L-82 with the following:
Edelbrock Performer RPM
Holley 650dp
No emissions controls (Except the cat).
14" open element breather.
That's it.
Obviously the stock exhaust is junk. You can tell simply by looking at it.
It will go this year. Just trying to decide what to do.
I know that a good dual system will net more than the side pipes, but; I really don't know by how much on something as stock as mine.
I would like the sidepipes I think, but the cost.
And I don't really want my or my wifes legs scarred. . .
just weighing my options for now.
Mike.
Anyone want to guess?
How about a good header dual combo?
Right now I have a Stock L-82 with the following:
Edelbrock Performer RPM
Holley 650dp
No emissions controls (Except the cat).
14" open element breather.
That's it.
Obviously the stock exhaust is junk. You can tell simply by looking at it.
It will go this year. Just trying to decide what to do.
I know that a good dual system will net more than the side pipes, but; I really don't know by how much on something as stock as mine.
I would like the sidepipes I think, but the cost.
And I don't really want my or my wifes legs scarred. . .
just weighing my options for now.
Mike.
Melting Slicks
Joined: Jan 2003
Posts: 2,804
Likes: 1
From: OKC Oklahoma
I've always heard that sidepipes rob you of power as opposed to a good dual exhaust system, but it would be nice to see facts. I would also be interested in seeing some dyno results. I've recently considered going with side exhaust for my 396 small block build.
Le Mans Master
Joined: Oct 2005
Posts: 6,247
Likes: 471
From: Glen Allen, VA
I have absolutely no basis on fact but I'd bet headers and sidepipes beat a stock catalytic converter, single exhaust any day. FYI, I run Hooker Super Comps and Flowmaster mufflers on true dual exhaust on my 79 L-82. Unfortunately I bought the car that way a month ago and couldn't tell you what gains the exhaust gave. My car also has a bigger than stock cam, and K&N filter on an open element air cleaner.
