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Old 09-30-2011, 05:45 PM
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Jeff Frigo Jeff Frigo is offline
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Join Date: Aug 2000
Location: Chicago, IL
Cobra Make, Engine: ERA 454 S.O.
Posts: 1,684
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Quote:
Originally Posted by patrickt View Post
Gary, I think the absolute truth of the matter is you're going to have to get new pipes made. I have the Stainless Specialties "quieter pipes" and they do pretty well. Short of new pipes, everything else is a just a gimmick.
I have talked to guys in who race A Production cars (see below) in vintage races that swear that these work well with little to no loss in power.

Dynatech Accessories - Auger Style Muffler



A-Production

AC Cobra (427cid)
1970-72 Chevrolet Corvette 350cid
1965-67 Chevrolet Corvette 427cid
1968-72 Chevrolet Corvette 427/454cid
DeTomaso Pantera 351cid
Ford Boss 429 429cid
Shelby GT-500 428cid
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“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”

Mark Donahue

Last edited by Jeff Frigo; 09-30-2011 at 05:51 PM..
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