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Old 08-03-2013, 11:03 AM   #31
blucar
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Join Date: Jul 2010
Location: Ventura, CA
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Default Re: flathead header questions

Quote:
Originally Posted by blucar View Post
The value of headers on a street engine is another myth that just wont go away.
Headers are intended to be ran as "an open exhaust, no mufflers". As a general rule headers do not start to do their work until the engine approaches 3,000 rpm's or higher.
Stock cast iron manifolds with 2" dual exhausts will provide all the performance that a street engine can muster.
Of course stock manifolds do not provide the bragging rights that headers do.
I tendered the above comment about headers when this question came up in April 2011..
The facts of the subject have not changed.. Headers are a waist of time and money on a vehicle that is only used for street driving.. A good set of stock cast iron manifolds with any kind of a straight through muffler, or a stock type chambered muffler will provide a nice sound, or no sound, depending on your preferences...
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