Re: [Amc-list] Header for Concord Wagon 6cyl?

[Wrambler242@xxxxxxxxxxx]

Ok, Mr. Science 

:)  [gee I hope he knows I'm kidding]

Do you then build your 2-1 header as say each pair from the firing order in a row?

Then do you go
6-3-1?

Any ideas of length for said perfect header?

Any idea of outlet size?


Anyone actually do the dyno tuning with this stuff?

Did Clifford or did they just whip up a set that looked coola nd provided a benefit and leave at as good enough?

--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5
2004 Grand Cherokee Laredo, 4.7L, Quadratrac II
" I realize that death is inevitable.
I just don't want to be around when it happens! "

 -------------- Original message ----------------------
From: adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)
> " From: Richard Estermyer <javelinman74@xxxxxxxxxxx>
> " 
> " 
> " Any suggestions to where to get a header for the 258 in my 1980
> " Concord wagon?  Would I notice a difference as I did in the 360 Mat
> " wagon? (25% inc).  Advantage over single or split header?  Anyone
> " have a lead for one?
> 
> clifford - but afaik their offerings are more race than street
> oriented.
> 
> split headers have the cool factor of letting you run duals all the
> way, but since an inline 6 is a pair of even-firing 3s a 'tri-y' 6 ->
> 2 -> 1 will always give you more power and over a wider range, all
> else being equal.  and you could have a muffler shop bend you a custom
> 2.5" or even 3" single, for low restriction.
> 
> someone out there makes a jeep 258 header with pipes from the front 3
> and rear 3 deliberately crossed, to give that 'lumpy v8' sound.  i've
> never understood why - v8s have to be that way; it's just how the
> timing and balance work out for the configuration, but i6s don't, and
> it doesn't help power.  probably hurts it.
> 
> tri-y [or 'crossfire'] headers on v8s make more power too, but it's
> usually impossible to make the pipes reach from one side to the other
> in just the tuned length.
> 
> you can get 'long tube' headers for the 4.0, but given the cramped
> space i don't think they're tuned properly.  even so, they're good for
> noticeable 'seat of the pants' midrange power gain.  and that's over a
> relatively clean stainless tube stock manifold, and into the stock
> exhaust pipe.
> ________________________________________________________________________
> Andrew Hay                                  the genius nature
> internet rambler                            is to see what all have seen
> adh@xxxxxxxxxxxxxxxxx                       and think what none thought
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