 GreatNorthWoods
"7th Year" Silver Supporting Member
Posts: 1385
Age: 80
Loc: Littleton, New Hampshire,...
Reg: 03-31-02
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06-23-22 02:34 AM - Post#2843249
Has anyone used them? My relatively stock 350 Chevy powered 1930 DeSoto had Magaflows on it when I bought it...very loud. I replaced them with Walker turbo mufflers but it's still too loud. I considered stock mufflers but a shop suggested resonators mounted before the turbo mufflers. I know nothing about them. Will they reduce exhaust noise? What can I expect in the area of noise reduction? I don't mind a light rumble but I don't want to alarm the neighbors every time I fire up the beast! 
Vern
1953 Chevy Belair Sport Coupe - 355 Chevy V8, 700-R4, 4-wheel disc brakes, Ididit column, cruise/tilt,'59 Vette Steering Wheel, A/C
1930 DeSoto Business Coupe- 350 Chevy V8, EFI, 4-wheel disc brakes, Wire Wheels, TH400, S-10 Rear, A/C |
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 dgstarr
"4th Year" Silver Supporting Member
Posts: 325
Loc: Portland, OR
Reg: 04-16-13
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06-23-22 09:35 PM - Post#2843284
In response to GreatNorthWoods
I have a 62 Impala with 300 hp 327. My 300 hp car is louder than my 250 hp 63 was. The 300 hp cars have a larger 2 1/2 in inlet muffler. The replacement mufflers for these cars seem louder the OEM GM mufflers, which are no longer made. I installed Show Cars resonators which are strait thru and are mounted in the stock (behind the mufflers) locations. The resonators have helped reduce the cruising rumble, but not completely eliminated it.
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GreatNorthWoods
"7th Year" Silver Supporting Member
Posts: 1385
Age: 80
Loc: Littleton, New Hampshire,...
Reg: 03-31-02
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06-24-22 03:21 AM - Post#2843289
In response to dgstarr
The shop I'm working with is suggesting I put the resonators in front of the mufflers. Wondering if that will matter.
Vern
1953 Chevy Belair Sport Coupe - 355 Chevy V8, 700-R4, 4-wheel disc brakes, Ididit column, cruise/tilt,'59 Vette Steering Wheel, A/C
1930 DeSoto Business Coupe- 350 Chevy V8, EFI, 4-wheel disc brakes, Wire Wheels, TH400, S-10 Rear, A/C |
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bobb
Super Senior Member
Posts: 6047
Loc: paradise
Reg: 09-05-03
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06-24-22 08:02 AM - Post#2843298
In response to GreatNorthWoods
any kind of resonator or muffler will help. the bigger the better. anything before the muffs will run hot. glasspacked anything normaly blows out the glass. i would put them wherever they fit.
| 70 L camino, grampa engine, g-force 5 spd, road rage suspension. Pray first before all else fails. |
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GreatNorthWoods
"7th Year" Silver Supporting Member
Posts: 1385
Age: 80
Loc: Littleton, New Hampshire,...
Reg: 03-31-02
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06-24-22 08:22 AM - Post#2843299
In response to bobb
any kind of resonator or muffler will help. the bigger the better. anything before the muffs will run hot. glasspacked anything normaly blows out the glass. i would put them wherever they fit.
Thanks. There is more room in front than behind so I'm guessing that's the reason. These are turbo mufflers but I'm running headers so that's probably contributing to the loudness too.
Vern
1953 Chevy Belair Sport Coupe - 355 Chevy V8, 700-R4, 4-wheel disc brakes, Ididit column, cruise/tilt,'59 Vette Steering Wheel, A/C
1930 DeSoto Business Coupe- 350 Chevy V8, EFI, 4-wheel disc brakes, Wire Wheels, TH400, S-10 Rear, A/C |
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bobb
Super Senior Member
Posts: 6047
Loc: paradise
Reg: 09-05-03
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06-25-22 09:58 AM - Post#2843347
In response to GreatNorthWoods
not cheap but maybe something like this
https://stainlessworks.net/chambered-round-muffl er...
| 70 L camino, grampa engine, g-force 5 spd, road rage suspension. Pray first before all else fails. |
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 Mel Foye
*VIP* Original Founding Member Group
Posts: 5432
Reg: 09-29-00
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06-25-22 11:09 PM - Post#2843379
In response to GreatNorthWoods
Vern the first time I used used turbo mufflers they were Corvair turbos. All have been on the loud side.
It Was On Fire When I Laid Down. |
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GreatNorthWoods
"7th Year" Silver Supporting Member
Posts: 1385
Age: 80
Loc: Littleton, New Hampshire,...
Reg: 03-31-02
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06-26-22 03:29 AM - Post#2843381
In response to Mel Foye
Vern the first time I used used turbo mufflers they were Corvair turbos. All have been on the loud side.
I have them (walker turbos) on my '53 Chevy Sport Coupe and it has a mildly hopped up Blueprint 350. They are not nearly as loud as they are on the DeSoto for some reason. Go figure...
Vern
1953 Chevy Belair Sport Coupe - 355 Chevy V8, 700-R4, 4-wheel disc brakes, Ididit column, cruise/tilt,'59 Vette Steering Wheel, A/C
1930 DeSoto Business Coupe- 350 Chevy V8, EFI, 4-wheel disc brakes, Wire Wheels, TH400, S-10 Rear, A/C |
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Tony1963
Frequent Contributor
Posts: 1411
Loc: Orlando Florida
Reg: 07-09-18
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06-26-22 06:26 AM - Post#2843386
In response to GreatNorthWoods
A while back I responded to a thread where I cited the location of the mufflers in the exhaust stream and the difference in sound/note that doing so made. I found an excellent article on another site that discussed that same issue.
You mostly see the resonator at the end of the exhaust stream. You can also try moving the mufflers to the rear area of the vehicle. I have also seen where some systems use a balance pipe between the pipes where they come close together. That balances sound as well.
| People fear change because it threatens what they know, or what they claim to know. |
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bobb
Super Senior Member
Posts: 6047
Loc: paradise
Reg: 09-05-03
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06-26-22 09:35 AM - Post#2843397
In response to Tony1963
yes the further away from the engine the more effective the mufflers. caddys had 4 mufflers 2 behind the rear end and those cars were quiet. lots of import cars back in the day had resonators before the muffflers.
| 70 L camino, grampa engine, g-force 5 spd, road rage suspension. Pray first before all else fails. |
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GreatNorthWoods
"7th Year" Silver Supporting Member
Posts: 1385
Age: 80
Loc: Littleton, New Hampshire,...
Reg: 03-31-02
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06-27-22 02:58 AM - Post#2843424
In response to Tony1963
The DeSoto is pretty compact and there is no room at the end of the exhaust system for a muffler or a resonator because of the gas tank location. The best place in terms of space for them is in the middle of the car.
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Vern
1953 Chevy Belair Sport Coupe - 355 Chevy V8, 700-R4, 4-wheel disc brakes, Ididit column, cruise/tilt,'59 Vette Steering Wheel, A/C
1930 DeSoto Business Coupe- 350 Chevy V8, EFI, 4-wheel disc brakes, Wire Wheels, TH400, S-10 Rear, A/C |
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 japete92
"8th Year" Silver Supporting Member
Posts: 2017
Loc: No. Virginia
Reg: 01-18-13
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06-27-22 05:34 AM - Post#2843427
In response to GreatNorthWoods
Has anyone used them? My relatively stock 350 Chevy powered 1930 DeSoto had Magaflows on it when I bought it...very loud. I replaced them with Walker turbo mufflers but it's still too loud. I considered stock mufflers but a shop suggested resonators mounted before the turbo mufflers. I know nothing about them. Will they reduce exhaust noise? What can I expect in the area of noise reduction? I don't mind a light rumble but I don't want to alarm the neighbors every time I fire up the beast!
Wouldn't new quieter mufflers (the same size as what you have now) be easier/cheaper than adding resonators and new exhaust pipes? Basically a simple muffler swap?
Pete
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GreatNorthWoods
"7th Year" Silver Supporting Member
Posts: 1385
Age: 80
Loc: Littleton, New Hampshire,...
Reg: 03-31-02
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06-28-22 02:34 AM - Post#2843480
In response to japete92
That's what I suggested to the shop but they said the resonators may be a better way to go...and, I do want to hear a little engine noise just to drown out the electric fuel pump!
Vern
1953 Chevy Belair Sport Coupe - 355 Chevy V8, 700-R4, 4-wheel disc brakes, Ididit column, cruise/tilt,'59 Vette Steering Wheel, A/C
1930 DeSoto Business Coupe- 350 Chevy V8, EFI, 4-wheel disc brakes, Wire Wheels, TH400, S-10 Rear, A/C |
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japete92
"8th Year" Silver Supporting Member
Posts: 2017
Loc: No. Virginia
Reg: 01-18-13
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06-28-22 07:04 AM - Post#2843488
In response to GreatNorthWoods
That's what I suggested to the shop but they said the resonators may be a better way to go...and, I do want to hear a little engine noise just to drown out the electric fuel pump!
Better for them. They get to make more $. And, what if the resonators do not do what you want them to do?
Me? I'd turn the volume up on the radio if the fuel pump noise bothered me. :laugh :
Just my thoughts. No criticism.
Pete
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