[DeTomaso] Replacement Headers

[Göran Malmberg]

3" is what I have myself, but it is a 526 cui motor.
2,5 would be ok for a 351. 1 3/4" primaries about as
long as they could get is also about right as a header of
original design allways tend to be to short. The tricky
part here is to create a good collector design. A merge
type with a following "waist" and a megaphone up to
2,5" is good but one probaly has to make contact
with http://www.burnsstainless.com/Xdesign/xdesign.html
for proper design.
I should stay with the 1 3/4", normal collector and 2,5
end pipes. Then put my money on the very best
silencer.
Goran


----- Original Message ----- 
From: "astephens" <artstephens at charter.net>
To: <scottcouchman at yahoo.com>
Cc: <detomaso at realbig.com>
Sent: Wednesday, November 12, 2008 8:34 PM
Subject: Re: [DeTomaso] Replacement Headers


> Hello Scott,
>     IIRC,  Dan Jones told me my header tubes were too big,  my collectors 
> too short and my exhaust too small.  My exhaust is 2.25.  It looks to me 
> like 2.5 is doable. I think Goran said that 3" was not easy to do.  It is 
> my understanding that bigger is better from the mufflers to the collector? 
> I've read that 3" exhaust makes a kind of unpleasant sound.  I think my 
> header tubes were 1.875?  I would hate to see you spend all the money for 
> new exhaust and not get the optimum size,  whatever that is?
>
> Art
>
>
>
>
>
> ----- Original Message ----- 
> From: "Scott Couchman" <scottcouchman at yahoo.com>
> To: "astephens" <artstephens at charter.net>
> Sent: Sunday, November 09, 2008 11:54 AM
> Subject: Re: [DeTomaso] Replacement Headers
>
>
>> Art, I've gotten some input that 2 1/4 produces more HP than 2 
>> 1/2....?????
>>
>> --- On Sat, 11/8/08, astephens <artstephens at charter.net> wrote:
>> From: astephens <artstephens at charter.net>
>> Subject: Re: [DeTomaso] Replacement Headers
>> To: scottcouchman at yahoo.com, "Pantera Forum" <detomaso at realbig.com>
>> Date: Saturday, November 8, 2008, 7:45 PM
>>
>> Scott,
>>     If you are going with new exhaust,  why not 2.5" instead of
>> 2.25"?
>> That is my plan,  although I will be running 408 cubic inches.  Perhaps 
>> Dan
>> Jones can shed some light on the issue for us?  Dan,  are you out there?
>>
>> Art
>>
>>
>>
>> ----- Original Message ----- 
>> From: "Scott Couchman" <scottcouchman at yahoo.com>
>> To: "Pantera Forum" <detomaso at realbig.com>
>> Sent: Saturday, November 08, 2008 1:16 PM
>> Subject: [DeTomaso] Replacement Headers
>>
>>
>>> I'm looking to replace my Hall Big Bore exhaust with a better
>> performing
>>> set of headers and 2 1/4" exhaust.
>>> Anyone have any suggestions and anything to sell?
>>> Here's your chance to clean out the garage!
>>> Not interested in any 180s.
>>>
>>>
>>>
>>>
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>>
>>
>>
>>
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>
>
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