[deckofficer]

During my tranny swap I had to fab a new trans support that will interfer with my dual exhausts. I run a stock exhaust manifold with seperate pipes and mufflers for each bank without a H or X pipe. Since exhaust fab is needed at this time, I figure to kill two birds with one stone and finally get an X pipe. My question is, will the X pipe still have the benifits with a manifold instead of headers/collectors?

Bob

http://www.carcraft.com/techarticles.../photo_09.html

[matts37chev]

it should still help

[deckofficer]

Matt,

Thanks for the prompt reply, I'm getting to love this forum. I agree with you, but just wasn't sure. I know it will quiet the exhaust by about 8db regardless of manifold vs. headers, but just wasn't sure the peformance increase would be close to the same.

Thanks alot,

Bob

[eloc431962]

yeah i agree it shouldn't be that much noticeable difference if any at all. Can't hurt only help.
Still going to be the same effect on performance should be just fine.JMO


Cole

[deckofficer]

Cole,

So you agree that the percentage of performance increase would be about the same regardless of manifold vs. headers/collector? I know the headers would be better, just don't have te room for them.

Bob

[eloc431962]

Originally Posted by deckofficer

Cole,

So you agree that the percentage of performance increase would be about the same regardless of manifold vs. headers/collector? I know the headers would be better, just don't have te room for them.

Bob

Hey Bob I think With headers would be best no doubt in my mind on that, But what i am saying is if you don't have the room for headers and have to run manifolds, Sure there is going to be a difference between the two. But i don't see it being that much of a difference and i wouldn't worry about it.JMO
Are you running center-dump manifolds now ?


Cole

[deckofficer]

yep, ram horns.

Bob

[matts37chev]

you better get that wire on the right side by the fuel line tied down, its rubbin on the frame

is your in line rad cap lower than the top tank? how well does that work?
depending on the rad i end up using, i may have to do the same thing

[cobalt327]

I could be wrong, but I think percentage wise, the gain would be greater using an "X" w/the less efficient cast iron manifolds compared to headers.

But that doesn't change the fact that the overall difference favors headers over the cast iron manifolds- even w/an "X".

[deckofficer]

Originally Posted by matts37chev

you better get that wire on the right side by the fuel line tied down, its rubbin on the frame

is your in line rad cap lower than the top tank? how well does that work?
depending on the rad i end up using, i may have to do the same thing

Matt,

Wire on my "to do" list. Due to the height of the neck, the cap is at top of tank level, but not above it like it would be on the upper tank.

Bob

[deckofficer]

Originally Posted by cobalt327

I could be wrong, but I think percentage wise, the gain would be greater using an "X" w/the less efficient cast iron manifolds compared to headers.

But that doesn't change the fact that the overall difference favors headers over the cast iron manifolds- even w/an "X".

Cobalt,

A greater gain percentage for my less efficient manifold is a good thing. Thanks

Bob

[Chevrolet4x4s]

The rams horns are the est flowing factory manifolds,IIRC they are about on par with shorty headers. The x pipe will really change the sound. Gives it a nice racy sound.
Shane

[deckofficer]

Shane,

I was hoping for a decrease in sound to the tune of about 8 db. This 383 is at least twice as quiet as the hot cammed 355 circle track engine I had before. It isn't too loud now, but since the T was built as a "sleeper", a quieter rumble is preferred. The hood line convinces everyone that the only thing that would fit is a 2.3 L Pinto engine.

Bob

[Chevrolet4x4s]

It does decrease the sound somewhat,but gives the sound a more like that of a OHC engine. http://www.youtube.com/watch?v=FBH2N4ovBaM
Shane