[DeTomaso] Difference in Headers

[michael@michaelshortt.com]

Header diameter is one of the factors which determine header pipe length,
this is black magic stuff for dyno dudes.
Here's calculator that I found online for you.
http://www.wallaceracing.com/header_length.php
Personally, all things being equal, go for the newest ones with good solid
welds and fresh gaskets.
The whole theory of headers is about exiting gas speed , but not so fast it
sucks in the incoming charge.

Good Luck,

Michael Shortt

On Thu, Jul 8, 2010 at 8:54 PM, Bob Radefeld <bob at dodgecarroll.com> wrote:

> Got a question for any of the header experts on the Forum. I
> presently have what I believe (?) may be a set of Hall's
> headers on my car that were on it when purchased in 2000.
> These headers measure 2" OD. & were on a set of open
> chamber 4V iron heads. With help from Dan Jones a few
> years ago (THANKS again Dan!) the engine was rebuilt
> after dropping a valve & I put a pair of closed chamber 2V
> iron heads on it. I retained these headers at that time.
> Today I made a great buy on a new & never installed set
> of PI Big Throat headers with primarys that measure
> 1-3/4" OD. Question is, would it behoove me in any way to
> install these new headers or are the larger ones now on the
> car better left alone? Could any change in performance,
> sound, mileage,etc. be expected with these smaller tube
> headers. Thanks for any answers you can provide.
>
>
> Bob (Rowdy) Radefeld
> SORC only about a month away!!  :o))
>
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-- 







Michael L. Shortt
Savannah, Georgia
www.michaelshortt.com
michael at michaelshortt.com
912-232-9390


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