DeTomaso Mailing List: December 99, Message #80

Uh Mike, I've never seen a Pantera with cast iron manifolds. The stock
setups I have seen, including mine have a tube steel manifold with sheet
metal gussets at the joints. An unequal length header if you may.

	-----Original Message-----
	From:	MikeLDrew@aol.com [SMTP:MikeLDrew@aol.com]
	Sent:	Monday, December 06, 1999 10:36 AM
	To:	Multiple recipients of list
	Subject:	Re:  resonance at 2000 rpm

	Landis wrote:

	>I have a totally stock 72 pre-l with the original header and ansa
mufflers.  
	I
	frequently hear people talk about a loud resonance a 2000 rpm.  My
car doesn't
	seem to do this.  Is this just a feature of the L exhaust or the big
bore
	headers, or am I just lucky and have an unusual car?

	>>>Neither.  The stock exhaust system was NOT really a header, but
rather a 
	cast iron tube manifold.  As such, it weighs a ton but also does a
very 
	effective job of damping out those harmonics.

	Simply put, stock Pantera exhaust systems are QUIET.  The manifolds
soak up 
	quite a bit of noise.  Put headers on a car (any car, i.e. Mustang,
Camaro, 
	etc. etc.) and you'll get more noise overall, even if the tailpipe
noises 
	remain unchanged.

	Mike