Exhaust advise

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Old 04-25-2020 | 12:25 PM
darrellv's Avatar
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Default Exhaust advise

Looking for advise and or options on the matter. I have a 69 carb. sbc with an exhaust that has been on my car forever and has had several different motors through the years. I run a 4speed with 373 gears so I'm able to pull off a bigger size Hydraulic cam. and I love "old school" styling. However, I'm getting older and wanting to change up my exhaust which is a simple header system with offset turbo mufflers about midway out to rear bumper. WITH ALL of that being said.
I've been reading and study different styles and exhaust. I'm thinking I want a different look and thinking about tail pipes 45cut behind rear wheels not out to rear bumper. But I can't find any clear cut answers for...

Installing an H pipe or X pipe SOUND or Real Advantages for a Street Car ???
Advantages or SOUND for a Transverse Muffler compared to twin mufflers under the seat area ???

Muscle Car "old school" is how I roll but I am getting older {maybe wiser}. I don't want the car to be hateful inside or to nasty to drive on interstate out of town to shows.
 
  #2  
Old 04-25-2020 | 01:06 PM
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A million and one options,best bet is go to a reputable muffler shop IMO. Someone who does a lot of classic cars prefered,touch base with a local car club and find out who's best.
 
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Old 04-25-2020 | 02:34 PM
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exhaust note is subjective, each has their own opinion on what sounds best. "Generally" speaking chambered mufflers have a louder note than straight through ones with some form of matt fill between the center straight pipe and walls of muffler.

A H or X pipe will "mellow" the sound some and offer better exhaust flow

exhaust tips, again personal preference. Mine are the angled turn downs after rear tire vs the pee shooters out the end

the larger the pipe size the more TQ you give up down low rpms. Unless you are making 400 rwhp, go 2 1/4" for a street car SBC

and listening to online video sound clips is a crap shoot given each motor is different as is the pipe involved making the exhaust so take them FWIW

Me, I have a 327 with stock manifolds to true dual 2 1/4" pipe with H pipe through Flowmaster 40's to the pipes exiting behind rear tires. Basically old school classic muscle car sound. My 67 is no Cadillac and IMHO should not sound like one
 
  #4  
Old 04-25-2020 | 04:04 PM
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Originally Posted by SoCal67
exhaust note is subjective, each has their own opinion on what sounds best. "Generally" speaking chambered mufflers have a louder note than straight through ones with some form of matt fill between the center straight pipe and walls of muffler.

A H or X pipe will "mellow" the sound some and offer better exhaust flow

exhaust tips, again personal preference. Mine are the angled turn downs after rear tire vs the pee shooters out the end

the larger the pipe size the more TQ you give up down low rpms. Unless you are making 400 rwhp, go 2 1/4" for a street car SBC

and listening to online video sound clips is a crap shoot given each motor is different as is the pipe involved making the exhaust so take them FWIW

Me, I have a 327 with stock manifolds to true dual 2 1/4" pipe with H pipe through Flowmaster 40's to the pipes exiting behind rear tires. Basically old school classic muscle car sound. My 67 is no Cadillac and IMHO should not sound like one
If you do listen online a decent sound system makes a huge difference,I've done videos of mine and on the phone or crappy PC speakers it soulds tinny,plugged into my stereo system it's sounds like it does live with full bass notes rumble.
 
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Old 04-25-2020 | 04:40 PM
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Originally Posted by SoCal67
exhaust note is subjective, each has their own opinion on what sounds best. "Generally" speaking chambered mufflers have a louder note than straight through ones with some form of matt fill between the center straight pipe and walls of muffler.

A H or X pipe will "mellow" the sound some and offer better exhaust flow

exhaust tips, again personal preference. Mine are the angled turn downs after rear tire vs the pee shooters out the end

the larger the pipe size the more TQ you give up down low rpms. Unless you are making 400 rwhp, go 2 1/4" for a street car SBC

and listening to online video sound clips is a crap shoot given each motor is different as is the pipe involved making the exhaust so take them FWIW

Me, I have a 327 with stock manifolds to true dual 2 1/4" pipe with H pipe through Flowmaster 40's to the pipes exiting behind rear tires. Basically old school classic muscle car sound. My 67 is no Cadillac and IMHO should not sound like one
So Cal, do you run the stock manifolds for a reason ? What do you think the H pipe does for you? I think the Flowmaster 40 sound good sitting stile but curious as to inside the car down the road etc.
 
  #6  
Old 04-26-2020 | 07:37 AM
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every thing from summit
 
  #7  
Old 04-26-2020 | 10:12 AM
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Originally Posted by darrellv
So Cal, do you run the stock manifolds for a reason ? What do you think the H pipe does for you? I think the Flowmaster 40 sound good sitting stile but curious as to inside the car down the road etc.
Stock manifolds are what came on the car and I have no intention of changing them with this motor. H pipe helps balance exhaust and according to the shop that did my exhaust will "mellow" the exhaust note. Car isn't really loud at idle, just that classic tone but certainly louder when you are on it. I don't find the Hwy driving a sound issue. My stereo easily over powers any exhaust noise.

I also have a foam/fiber board baffle that covers the trunk side of the back seat. PO put it in. It helps especially with the fold down seat, down
 
  #8  
Old 05-03-2020 | 08:13 AM
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Guys that have had or know...Whats the biggest difference between the FlowMaster 40's and the 44's ? Its hard to tell from any YouTube video. I know ever body has a different taste and motors etc. etc. Anyone that has had both maybe same car same motor etc. have better advise. Outside the car inside the car etc.
 
  #9  
Old 05-03-2020 | 08:44 AM
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according to Flowmaster…

44
The Super 44 delivers a powerful rich tone and is the most aggressive, deepest sounding, highest performing 2-chamber street muffler we’ve ever built!

40
The muffler that started it all, the original 40 Series Muffler is an aggressive sounding street/strip muffler that delivers a powerful “Flowmaster Sound” you’ve heard so much about it.
 
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