Muffles

Bob Dunahugh

New member
Sep 17, 2012
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Has anyone installed a series 40 Flow master Muffler? Putting two on so we can make our next trip Wed. Think I need to call Jim K at Applied when we get back. Bob Dunahugh 78 Royale Member GMCMI
 
The Series 40 is the standard Flowmaster hot-rod muffler, a bit shorter
than the Series 70 we usually use, as I recall, and louder. I have a pair
of an "alternative brand" version of the Series 40 (Dynomax), and they have
worked fine. Only ones I could get to fit in front of the existing Y-pipe,
which I have still never needed to change.

Rick "who'd use 'em if that's what's available" Denney

> Has anyone installed a series 40 Flow master Muffler? Putting two on so
> we can make our next trip Wed. Think I need to call Jim K at Applied when
> we get back. Bob Dunahugh 78 Royale Member GMCMI
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--
Rick Denney
73 x-Glacier 230 "Jaws"
Off-list email to rick at rickdenney dot com
 
I've got 40's on my coach. I think they're too noisy and even more importantly my wife doesn't like them. I've been thinking about changing them
out. I was under my coach and found that the aluminum body panel above them was cooked and distorted. Flowmaster makes heat shields and after
sucuring the aluminum panel back up, I'm to install the shields. I've read that they reduce the noise. I'm hoping they do, but probably not that
much. I was thinking of putting a piece of lead sheet between the shield and the muffler for further sound reduction, but looking at exhaust temps
and the melting point of lead, thought better of it.
--
Jack Christensen - K6ROW,
'76 Glenbrook/Clasco - "The Silver Bullet",
Sebastopol, CA
 
40s can hardly be called a "muffler". I put a 2.5/2.5" series 50 on my Jeep as it was all I could find in the config I needed and it's throaty but
tollerable with no brash RPM range. Some cheap mufflers are like megaphones at certain pulse rates.
--
John Lebetski
Woodstock, IL
77 Eleganza II