Originally posted by lun40119
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Mufflers for the long drives
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HOTROD Dragweek Pro Street N/A winner 2007,2011, 2012/ 2nd, 2009
HOTROD Dragweek quickest and fastest naturally aspirated car in any class 2006, 2007, 2011, 2012
FIRST IN THE EIGHTS Legal Pro Street N/A HOTROD Drag Week 2012
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I ran 3 inch pipe into 2 chamber Flowmasters for Dragweeks 06 thru 08. Then changed to 2 1/2 inch pipe and Dynomax Ultraflo Welded mufflers. The car became much quieter at road speeds and the gas mileage increased. Since my Camaro only has 302 cubic inches, it is necessary to remove the exhaust when on the track. Removal is worth a min of at least 3 tenths!
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Originally posted by CDMBill View PostCase size is the key to quiet, the bigger the case for a given length and inlet/outlet diameter the quieter it'll be in almost any brand. It will also be heavier.My fabulous web page
"If it don't go, chrome it!" --Stroker McGurk
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Originally posted by oklaracer View Postso you guys think 5" is going to be deafening?....lolDan, Co-Pilot Drag Week 06
Drag Week '11 just Me and my Dad in my 53 Chevy, which was his Dads old truck
Drag Week '12 plus one day...Me and Dad in my 53 again....
Drag Week 2013 with my father in law.. New BEST ET/MPH 11.87@112
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Originally posted by Oklaracer View PostSo you guys think 5" is going to be deafening?....lol2007 SBN/A Drag Week Winner & First only SBN/A Car in the 9's Till 2012
First to run in the .90s .80s and .70's in SBN/A
2012 SSBN/A Drag Week Winner First in the 9.60's/ 9.67 @ 139 1.42 60'
2013 SSBN/A Drag Week, Lets quit sand bagging, and let it rip!
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Do you really need any mufflers after a turbo??
seems like they quiet the exhaust down a ton by themselves!!Dan, Co-Pilot Drag Week 06
Drag Week '11 just Me and my Dad in my 53 Chevy, which was his Dads old truck
Drag Week '12 plus one day...Me and Dad in my 53 again....
Drag Week 2013 with my father in law.. New BEST ET/MPH 11.87@112
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I'm going to try a set of these:
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Dynomax VT. Has a flapper valve that makes them quiet when cruising but opens up for free flow at WOT. Sort of like the 'vette does with its flapper valve.
I had a Moroso spiroflow set up on my car, had to wear ear plugs until I lined the car with HVAC duct insulation:
Finally got it really quiet inside when I extended the exhaust tip all the way back past the bumper.
It was quiet inside but still set off every honda/acura alarm when I'd pull through a parking lot. LOLI'm still learning
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I can set off car alarms with mine....... I love that!!!
My neighbor says it is weird........my car isn't loud, but the depth of the noise and the resonance shakes the soffets on the house when I drive by.Last edited by lun40119; June 20, 2012, 09:07 AM.Team Clueless
1st Place SB/NA DW12
2nd Place SB/NA DW11
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Originally posted by lun40119 View PostI can set off car alarms with mine....... I love that!!!Dan, Co-Pilot Drag Week 06
Drag Week '11 just Me and my Dad in my 53 Chevy, which was his Dads old truck
Drag Week '12 plus one day...Me and Dad in my 53 again....
Drag Week 2013 with my father in law.. New BEST ET/MPH 11.87@112
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If you put the muffs at the rear bumper it will make it quieter... as the gasses get cooler
they reduce in volume(area) and is much easier to control the note... plus it has less
back pressure... I worked in the Fuel& Exhaust lab at Chrysler for 35 years and did tons
of testing... if you notice now days the muffs on most new cars is back as far as possible
to gain a few things... more HP due to the lesser back pressure and its easier to control
the sound
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