Will V8 Exhaust Manifold Flanges Fit V6

Dannymclovin · Jan 26, 2018

Hello I've looked around for specific numbers and can't really get anything my question is will 99to 04 gt exhaust flanges fit a v6 same year I want to weld up my own turbo exhaust manifold but the only thing available are v8 flanges with aPort Size: 1.30" x 2.162" . Obviously I'd cut the extra flange off so will it fit or can I make it work if it's just a bit off?

Mustang5L5 · Jan 31, 2018

Dannymclovin · Jan 31, 2018

Mustang5L5 said:
No.

No what no they won't fit period or no because they'll have a gap I just wanna know if they'll be off set by a little and if I can get away with using them

Mustang5L5 · Jan 31, 2018

Need a little more info on what flange you are referring to, but the bolt pattern for the manifold to the head is different. The V6 flange has the mounting bolts a bit more horizontal while the mod motor is almost vertical. Even if you cut off the extra cylinder, you would need to weld up and then redrill the bolt holes in the proper spot.

Would almost be easier to draw up a DXF cad model of the pattern you need and send it out to get laser cut from 1/4" steel and then weld to that.

Dannymclovin · Jan 31, 2018

Mustang5L5 said:
Need a little more info on what flange you are referring to, but the bolt pattern for the manifold to the head is different. The V6 flange has the mounting bolts a bit more horizontal while the mod motor is almost vertical. Even if you cut off the extra cylinder, you would need to weld up and then redrill the bolt holes in the proper spot.

Would almost be easier to draw up a DXF cad model of the pattern you need and send it out to get laser cut from 1/4" steel and then weld to that.

http://www.mandrelbends.com/flanges...r-4-6l-sohc-header-flange-3-8-mild-steel.html
That's the link to the flanges so fill in the holes then re drill? Or just make a flange from scratch?

Mustang5L5 · Jan 31, 2018

Easiest way to see...

Go to local parts store and buy exhaust manifold gaskets for each. Then you can compare and check spacing and come to s conclusion.

Then just return when done

Dannymclovin · Jan 31, 2018

Mustang5L5 said:
Easiest way to see...

Go to local parts store and buy exhaust manifold gaskets for each. Then you can compare and check spacing and come to s conclusion.

Then just return when done

That was the next step thanks I'll update once that's done

Dannymclovin · Feb 3, 2018

Mustang5L5 said:
Easiest way to see...

Go to local parts store and buy exhaust manifold gaskets for each. Then you can compare and check spacing and come to s conclusion.

Then just return when done

There has been some interesting revelations the gt gasket (on top) the v6 at the bottom it sure looks like I can get away with using the gt flanges for my v6 manifold

Mustang5L5 · Feb 3, 2018

Is the individual spacing the same or youjust going to cut the flange and weld to suit?

Dannymclovin · Feb 3, 2018

Mustang5L5 said:
Is the individual spacing the same or youjust going to cut the flange and weld to suit?

Well they sell those v8 flanges the gaskets match those flanges could I just buy those flanges that are already made and just use those

Will V8 Exhaust Manifold Flanges Fit V6

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