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  Sorry neighbours, I removed my exhaust system.

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Author Topic:   Sorry neighbours, I removed my exhaust system.

Posts: 357
From: Toronto,Ontario,Canada
Registered: Aug 2000

posted 05-06-2003 09:58 PM     Click Here to See the Profile for 70coupe     Edit/Delete Message   Reply w/Quote
I decided to finally remove my exhaust system and shed the weight and restriction to gain that tenth I was looking for.
I had 2 1/2" pipe out the back with really heavy Vortex mufflers(ever heard of them). Anyways, I would like to install some sort of muffler to the header or collector to keep the noise down. Any ideas? Does it help much? Oh yea, I also removed my blower motor system,wiper motor and my extra carpet that was below my newer one.
Thanks all,

351c 4v clsd heads
1/8 [email protected]
1/4 [email protected]

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Posts: 6522
From: Sonoma,CA,USA
Registered: Mar 2000

posted 05-06-2003 11:51 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Hang a 3"+ race muffler on the collector. Borla sportsman, 1 chamber flow, purple hornies etc. That'll take the edge off.


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Posts: 1547
From: Spencer, WV
Registered: Jan 2001

posted 05-07-2003 10:18 AM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
Cheap way...

Weld collector rings to a set of those 'Race Magnum' bullet mufflers sold by Dynomax. The rings come with about any 'cheap' set of header reducers. (around $14/pair)

The 3" (or whatever size your collectors are) Bullet mufflers cost around $39/each. Get the longer ones for more noise suppression.

It will be a 'little' quieter, and the extra collector length might provide a little extra low-end (launch) power.

A buddy of mine with a Plymouth Valiant went quicker with this setup over open headers. It launched harder.

If you really want to get 'technical', purchase a set of those 'venturi' reducer cones from Flowmaster and turn them around backwards and run mufflers that are larger than your collectors. This 'expansion chamber' can sometimes pick up even more power. Some of the engine builders were doing it on that $100,000 'Engine Masters Challege' anyway... and it seemed to work.

Good Luck!

Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3

[This message has been edited by n2oMike (edited 05-07-2003).]

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Posts: 142
From: Seattle, Wash.
Registered: Feb 2003

posted 05-07-2003 10:44 AM     Click Here to See the Profile for Tea'sGrabber   Click Here to Email Tea'sGrabber     Edit/Delete Message   Reply w/Quote
I run the 2 disc inserts made buy Car Chemistry,Inc. You just tac-weld them in your collector and it quiets them down without any power-loss. Summit or Jegs sells them... They work and meet most track sound requirements also!

Todd 71 Mav Grabber All orig 306 Cast Iron heads. Carillo Rods.Best et. 10.71 @ 124 thru the mufflers.

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