size of down pipe oem???

[martinezguad]

does any one knows whats the size of the down pipe in a 2004 6.0??? and whats the bigges downpipe you can use??? thank you

[choctaw]

3 1/2" stock and 4" aftermarket

[martinezguad]

Originally Posted by choctaw

3 1/2" stock and 4" aftermarket

thank you. where to buy a good cheap exhaust for it???

[lowstroke]

4 inch if you port your cab. otherwise, you will have bad vibrations from your downpipe hitting your firewall.

[lowstroke]

MBRP. ask a vendor on the site.

[martinezguad]

Originally Posted by lowstroke

4 inch if you port your cab. otherwise, you will have bad vibrations from your downpipe hitting your firewall.

???? what do you meen PORT YOUR CAB???

[choctaw]

The vendors on the board are your best bet-I think they are all great! How's that for political correctness?
I have used only 1 and not for exhaust, but you will get plenty of opinions!!

[lowstroke]

watch this.
http://www.hogperformance.com/upload...ng%20Video.WMV

[choctaw]

Originally Posted by lowstroke

4 inch if you port your cab. otherwise, you will have bad vibrations from your downpipe hitting your firewall.

Is there that much difference from 04 to 06?

[lowstroke]

as far as what?

Originally Posted by choctaw

Is there that much difference from 04 to 06?