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Author
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Topic: Time to get exhausted...
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Thud
Gearhead Posts: 1407
From: Cumming,Ga.,USofA
Registered: Jun 99
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posted 06-05-2003 09:40 AM
 
Here are my thoughts on an exhaust system for my '70 Mach1. I'm VERY open to suggestions:The Car: '70 Mach1. 351C, 2v heads, Edelbrock Performer w/Holley, DynoMax headers... 381HP/415Lb.Ft. at crank (dynoed). 3.50-1 Traklok and a FMX. I'm thinking about DynoMax Super-Turbos with the 2-1/2" FlowMaster tailpipes (2-1/2" pipes, with crossover, fabbed from header to muffler inlet). Does anyone know part numbers so that I can get the right mufflers/tailpipes on the first try?
Would I be better off with 2-1/4" pipes since it isn't that radical?
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"My doctor says I have a malformed public duty gland and a natural deficiency in moral fiber; and that I am, therefore, excused from saving universes." ... Ford Prefect If you're not part of the solution, you're part of the precipitate. Dwayne M&M Member #18
'94 Lightning #942 of 4007
'70 Mach1
'75 Cougar
'65 Galaxie 500 + parts car
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Hemikiller
Gearhead Posts: 726
From: Killingworth, CT
Registered: Feb 2002
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posted 06-05-2003 12:36 PM
There are several ways to do this...1) Get the Flowmaster kit, #17273, about $320 from Summit or Jegs. Comes with two chambers, but also comes with the tailpipes, all the clamps and hangers, as well as a beautiful mandrel bent H-pipe. Their application guide says 64-66, but I've installed one on a 73 cougar and we still had to trim the pipes as they leave extra on the ends. 2) Get a set of the tailpipes from Flowmaster (15807) and the dynomax's (17733)which is a little smaller that the flowmaster muffler, but will work just fine. All early Mustangs have to have an offset inlet / center outlet muffler to fit properly. You will then have to fab your h-pipe, and figure your own hangers. Personbally, I'd get the kit and either run the Flowmasters or sell them and get your preferred Dynomax's.
http://www.dynomax.com/documents/super_turbo_specs.pdf
http://www.flowmastermufflers.com/web10/pages37-38.pdf
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Thud
Gearhead Posts: 1407
From: Cumming,Ga.,USofA
Registered: Jun 99
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posted 06-05-2003 01:40 PM
quote:
Originally posted by Hemikiller:
Personbally, I'd get the kit and either run the Flowmasters or sell them and get your preferred Dynomax's.
That's a great idea... I'll be sure to claim it as my own!  (kidding!) I don't have a problem with Flowmasters (they're on my truck), I just want a little calmer sound from the Mustang.
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"My doctor says I have a malformed public duty gland and a natural deficiency in moral fiber; and that I am, therefore, excused from saving universes." ... Ford Prefect If you're not part of the solution, you're part of the precipitate. Dwayne M&M Member #18
'94 Lightning #942 of 4007
'70 Mach1
'75 Cougar
'65 Galaxie 500 + parts car
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69 Sportsroof
Gearhead Posts: 2814
From: Valley, Alabama, USA
Registered: Mar 2002
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posted 06-09-2003 06:53 PM
Just visited the Flowmaster site and the delta flow 40's are quite a bit quieter than the regulare 40's. They may not be too loud for you.
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