Re: Straight Through Type Mufflers On Street
[Re: YO7_A66]
#1591923
03/12/14 03:44 PM
03/12/14 03:44 PM
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Joined: Aug 2003
Posts: 43,252 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,252
Bend,OR USA
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I ran a set of Magnaflow 14x7x 3 inch in and out on my pump gas street Duster, they where mounted behind the rear end between the 1/4 panel and rear sub frames, exited at the rear bumper I did have three inch pipes straight from the headers to the muffs, no resonators, nice sound at part throttle cruise No droning that I remember, they where a lot louder at WOT I raced that car a lot, it would pickup only .004 ET and .2MPH in the 1/8 mile by removing the exhaust from the headers back, probally the weight saving and not a reduction in back pressure making the gains My next street car will probally have a set of Ultaflow 3.5 inch muffs and pipes on it
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Straight Through Type Mufflers On Street
[Re: YO7_A66]
#1591926
03/12/14 09:04 PM
03/12/14 09:04 PM
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Joined: Jan 2003
Posts: 12,218 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,218
Benton, IL.
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On my 500" wedge with 3" exhaust, I run Dynomax straight thru mufflers ahead of the axle and cheap glass packs behind. The noise is acceptable for the street and it controls the drone while sounding a lot like these cars did in the 60s and 70s. A lot of today's mufflers make our cars sound like rustangs and the like.
Master, again and still
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Re: Straight Through Type Mufflers On Street
[Re: DaveRS23]
#1591927
03/13/14 08:34 AM
03/13/14 08:34 AM
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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
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OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
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Thanks for the replies.
I have been leaning towards putting in the largest diameter/length 2-1/2" (appx: 6" diameter x 18" body) straight through muffler that will fit beside the tank and then test the sound. Then if it is still too loud, then add another one under the seat (appx: 4" diameter x 14/18" body) to settle it down.
Thanks again.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: Straight Through Type Mufflers On Street
[Re: AdamR]
#1591930
03/13/14 01:14 PM
03/13/14 01:14 PM
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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
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OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
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I am leaning towards the 6" diameter by 18" long bodied Magnaflow beside the tank. Then if required, I would look at the 4" diameter by 14"/18" long bodied Magnaflow as a resonator.
I attached one of the 6" verions for reference. I already measured and the 18" body should work beside the tank, it just depends on the tail pipe and I will buy it first before choosing the length of muffler. I want the longest muffler beside the tank that will fit. Thanks to all.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: Straight Through Type Mufflers On Street
[Re: YO7_A66]
#1591933
03/13/14 06:50 PM
03/13/14 06:50 PM
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Joined: Oct 2006
Posts: 3,054 USA
b54406barrel
master
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master
Joined: Oct 2006
Posts: 3,054
USA
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Those aren't the full size one's. Those are cadillac quiet compared to the first series. I had them on 69 bb camaro with a ZL-1 cam, off 2-1/8 tube cyclones. . It would rattle all the glassware around the counter at the local A&W. Too many tickets so they had to come off.
Last edited by b54406barrel; 03/13/14 06:52 PM.
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Re: Straight Through Type Mufflers On Street
[Re: YO7_A66]
#1591936
03/13/14 09:11 PM
03/13/14 09:11 PM
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Joined: Jan 2003
Posts: 12,218 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,218
Benton, IL.
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On the straight thru mufflers both length and diameter matter when it comes to noise level. A muffler style will be much quieter than a similar length bullet. And stay quiet longer, too.
What they call bullet today used to be called a glass pack, right?
Master, again and still
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Re: Straight Through Type Mufflers On Street
[Re: DaveRS23]
#1591937
03/13/14 09:54 PM
03/13/14 09:54 PM
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Joined: Jan 2003
Posts: 7,978 Bethel Ct
AdamR
master
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master
Joined: Jan 2003
Posts: 7,978
Bethel Ct
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Quote:
What they call bullet today used to be called a glass pack, right?
Pretty much
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Re: Straight Through Type Mufflers On Street
[Re: urdustd]
#1591940
03/14/14 08:55 AM
03/14/14 08:55 AM
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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
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OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
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""I'll bet you will need a crossover or multiple muffs to make it tolerable.""
I thought of the largest straight through muffler in the rear (6 dia. x 14"/18"), then possibly the 4" dia x 18"/22" or so for a resonator, but I did not think of adding a possible crossover pipe. I am currently running each exhaust side seperately from each other. I will take some measurements to see what x-pipe might fit, just in case.
Thanks
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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