RE: IML: 1959 to 1966 Exhaust Manifolds

["Rob McCall" <Rob_Mopar@xxxxxxxxxxx>]

Rodger,

Sorry, I don't know enough about the earlier Imperials, but I think you may
be onto something.  Are there any pictures of what the stock manifolds look
like?  I'd imagine they are similar in design to the log style currently on
my '67.  (The C-body HP manifolds I scored are currently residing in the
trunk.)

Those reproduction truck manifolds do have some sweep to them, but not
nearly as much as the HP manifolds, but more than a log.  

Where do the HP manifolds interfere on the driver's side of a '66-down car?
If it requires a center dump manifold, and a center dump manifold will clear
on the passenger side, then a street rod style header may work.  Ones
designed to dump in the center close to the block, as to clear the frame
rails of something like duce roadster.  Sanderson makes headers that fit
that description.  I believe Hooker may as well.  This is if you aren't
concerned about looking completely stock.

Rob McCall
'67 LeBaron

-----Original Message-----
From: mailing-list-owner@xxxxxxxxxxxxxxxx
[mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On Behalf Of FltSgt@xxxxxxx
Sent: Wednesday, March 02, 2005 9:39 PM
To: Mailing-List@xxxxxxxxxxxxxxxx
Subject: IML: 1959 to 1966 Exhaust Manifolds

Hola

As we all have witnessed from the writings MoPar started making exhaust 
manifolds to help out the flow of the big V8's.  After the issue of the 1967
to 
1978 Imperial some lucky owners had their prestige car with the 440 that had
a 
boosted horse power.  Since that time some owners have tried to copy the 
factories know-how by installing the coveted HP / Magnum / TNT / etc exhaust

manifolds on their ride.

But, the 1959 to 1966 Imperial owner who wanted to raise their 340 horse 
powered 413 or 350 horse powered 440 could only go for the dual exhaust.
The old 
style duals would add 15 horse power at the most over the single exhaust (  
Maybe this was a factor in having the sporty "rag-tops". )  Due to frame
design 
and the location of the engine on the 1959 to 1966 Imperials the better HP 
manifolds will not fit the drivers side due to design space.  This is the
old 
story said over and over about the drivers side needs a center dump
manifold.

I do believe MoPar made it possible without sending a letter to all the 1959

to 1966 owners.  The late model Imperial ( 1972 - 1978 ) passenger side 
exhaust manifold with the casting stamp of 3830820 ( 
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=33632&item=7958442195
&rd=1&ssPageName=WDVW ) and the 
late model drivers side center dump manifold from a truck ( 
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=795869198
4&category=33632&sspag
ename=WDVW ) both have the same design appearance.  Some could say they are 
the latest of exhaust technology of the early 413 / 440 design.

Now that I'm showing ya what I am thinking, do any of you have any data to 
support my thoughts in aiding the early power readings with the newer
manifolds 
???

                                       Rodger & Gabby
                                       Colo Spgs

'47 De Soto Custom w/Fluid Drive & passenger door mounted swamp cooler
'62 Crown Coupe w/std A/C & Auto-Pilot
'66 Le Baron w/dual A/C & reverbed AM/FM
'70 Overlander - InterNational Dbl
'77 D150 w/360, NP 4 Spd, 12 Bolt Axle, OEM Buckets & etc


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