muffler question
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Joined: Dec 2006
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muffler question
I am restoring a 68' and need to know if the inlet and outlet on the muffler is offset or centered. ( the body is off the frame so I can't check this) Also, are the Flowmaster super 40's to loud for a 427. I want the neihbors two know I am coming.
Burning Brakes
Joined: Aug 2005
Posts: 1,126
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From: Hudson Falls, N.Y. 76 Vette Modified L-48
Here's my story....
On my 76, when I bought it, the muffs were round, with center outputs, I suspect originals or original GM replacements....DynoMax sez "these are exact replacement muffs"...so I buy 'em, and gee wizz, not even close...oval with offset outputs...well, I made them fit, had to change the back hanger, and actually, they look pretty good....but to answer the question, I can only assume GM didn't change the C3 exhaust config during it's entire life and 68 and 76 "should" be the same, so "if" MY original muffs were stock, they should be center out...
I think
On my 76, when I bought it, the muffs were round, with center outputs, I suspect originals or original GM replacements....DynoMax sez "these are exact replacement muffs"...so I buy 'em, and gee wizz, not even close...oval with offset outputs...well, I made them fit, had to change the back hanger, and actually, they look pretty good....but to answer the question, I can only assume GM didn't change the C3 exhaust config during it's entire life and 68 and 76 "should" be the same, so "if" MY original muffs were stock, they should be center out...
I think
Instructor
Joined: Oct 2003
Posts: 186
Likes: 0
the muffs should be offset inlet and center outlet. i would run Dynomax Ultra Turboflow stainless muffs instead of Flowmaster 40s. they sound better and do not resonnate in the cab like Flowmasters. idle note is very deep and soft, yet crisp so you can not **** anyone off when you want to be quiet. if you get on it, they bellow out a solid tone that is pleasing to the hot-rod ear. plus the stainless looks great for a long time and will compliment the chrome bumper!
Racer
Joined: Oct 2005
Posts: 469
Likes: 0
From: West Slope of the Sierras California
If you want to listen to your stereo don't go 40's, unless you have a zillion watts. I have 40's and it's quite a challenge. Have talked to Flowmaster reps at car shows and they don't even recommend 40's for 'Vettes.
Team Owner
Joined: Jul 1999
Posts: 26,545
Likes: 46
From: Huntersville NC
I like my flowmaster 50s (68 vette - L-36), but a couple of points. For me, the 50s were a good compormise between wanting to be heard but not wanting to be too loud. You have to like the sound, because flowmaster sound is very distinctive. A 68 Charger 440 with flowmaster 50s will sound a lot like a 68 vette 427 with flowmaster 50s. The 50s are longer than the stock muffler, so it is a tight fit. Offset in and center out is the stock configuration.
Tech Contributor
Joined: Jun 2004
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
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Melting Slicks
Joined: Aug 2005
Posts: 2,359
Likes: 15
From: Confusion
Here's my story....
On my 76, when I bought it, the muffs were round, with center outputs, I suspect originals or original GM replacements....DynoMax sez "these are exact replacement muffs"...so I buy 'em, and gee wizz, not even close...oval with offset outputs...well, I made them fit, had to change the back hanger, and actually, they look pretty good....but to answer the question, I can only assume GM didn't change the C3 exhaust config during it's entire life and 68 and 76 "should" be the same, so "if" MY original muffs were stock, they should be center out...
I think
On my 76, when I bought it, the muffs were round, with center outputs, I suspect originals or original GM replacements....DynoMax sez "these are exact replacement muffs"...so I buy 'em, and gee wizz, not even close...oval with offset outputs...well, I made them fit, had to change the back hanger, and actually, they look pretty good....but to answer the question, I can only assume GM didn't change the C3 exhaust config during it's entire life and 68 and 76 "should" be the same, so "if" MY original muffs were stock, they should be center out...
I think
