<VV> Mufflers/duals

[Bill Elliott]

Your #1 issue is the PG trans... while there are several very good (and 
cheap) systems for the Corvair, few of them sound good with a PG trans 
(which loads the engine differently than a manual trans)... and not only 
do they sound ratty, they rob you of very important low end torque... 
torque that you don't really miss with a manual trans.

My favorite exhaust on a manual is either the Clarks large bore 
extractors or dual 2" modern turbo mufflers (I use the Walker Dynomax 
SuperTurbo) on factory u-pipes... they sound and seem to perform 
strikingly similar. Deep and loud.  But they sometimes sound a bit 
"ratty" on a PG IMO.

I've only heard two systems that I though sounded really good on a PG 
engine.

One is using factory 140-type mufflers on the 110-u-pipes you can get 
from the Corvair vendors. The baffled mufflers seem to retain the low 
end torque and provide a more pleasing tone than the stock single 
baffled muffler.... but they are not loud at all.

But my favorite is using a single modern turbo muffler (Flowmaster, 
Dynomax SuperTurbo, etc) on the factory crossover. This seems to retain 
the low end toque, provide more top end power, and sound great (even if 
not quite like a Z28 or the like).

I've recently just purchased on of Matt's "big bore" crossovers to use 
on a PG engine, figuring that the torque loss from the larger bore will 
be minimal but the potential power gains and sound will be better than a 
stock crossover.

Matt also makes a "big twin"... a large bore crossover that will accept 
dual mufflers (and functions as an H pipe)... if you insist on running 
duals, this is what I'd use as the balance tube will help keep more low 
end torque.

Modern turbo mufflers actually flow better than most "cherry bombs"....

Good luck!!
Bill

kwoodke at comcast.net wrote:

>Howdee, new member here. I returned to "Planet 'Vair" last spring by buying a '65 Monza cpe, 110 Powerglide w/AC. I'm sure this has been talked about before but I want to try to set up some good sounding dual mufflers without going to headers yet,(yes I'm cheap). I have other issues to resolve before I get carried away. I want to make it an almost daily driver. Back in the 70's I had  65cpe with dual Cherry bombs (they're back on the market by the way), but there they were real loud. I tried Hush Thrushes but they were almost too quiet. 
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>There are numerous Hi-perf mufflers out there now and I am wondering if some one can give me a recommendation. I'm looking for deep mellow but not annoying loudness. I know I am at a disadvantage with the PG but that's what I gotta live with for now. I'll probably get dual pipes from Clark's and try mufflers and tips (if there is room) from local sources. 
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>I'm looking for that 69 Z/28 sound, any help would be appreciated.
>Keith Woodke
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