Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, ERA 289 roadster hybrid, mystery Ford powered 2dr convertible
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Muffler Alternatives
Having worked the tuning issues out with my 289 Roadster (may still need to replace current electric fuel pump with something better, waiting till warmer weather to investigate), I'm now wondering if anyone has tried an alternate muffler for their undercar exhaust, as the factory parts leave a less than desirable, raspy sound. Reminds me of the mid 2K's when everyone under 22 years old was installing 30 series Flowmasters on their late model daily drivers. Harsh, no real character if you catch my drift. Looking for more of that smooth burble/rumble, hard to describe in writing.
Bill S.
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These Flowmasters (don't cringe) have the same Laminar Flow as the Sidepipe mufflers they used to make. Moderate sound (50s style). 4" tall case. avail in 304 and 409 SS. THe Moderate lvl versions are, Case:18"LX5"WX4"T, (overall length 24"), 2.00-2.25-2.50 dia.+ no packing to blow out.
Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, ERA 289 roadster hybrid, mystery Ford powered 2dr convertible
Posts: 12,763
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Quote:
Originally Posted by spdbrake
Bill,
These Flowmasters (don't cringe) have the same Laminar Flow as the Sidepipe mufflers they used to make. Moderate sound (50s style). 4" tall case. avail in 304 and 409 SS. THe Moderate lvl versions are, Case:18"LX5"WX4"T, (overall length 24"), 2.00-2.25-2.50 dia.+ no packing to blow out.
Contact me. My 289 exhaust is out with a manufacturer for prototyping and will have three muffler tones available and also be about 1" shallower giving more ground clearance.
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Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, ERA 289 roadster hybrid, mystery Ford powered 2dr convertible
Posts: 12,763
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Quote:
Originally Posted by Mark IV
Bill,
Contact me. My 289 exhaust is out with a manufacturer for prototyping and will have three muffler tones available and also be about 1" shallower giving more ground clearance.
Rick, I thought you used my car for the prototype measurements while it was there. Just want a nice throaty, but not obnoxious "burble". When you can, send me the details, you have my email
Thanks in advance,
Bill S.
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Instead of being part of the problem, be part of a successful solution.
Having worked the tuning issues out with my 289 Roadster (may still need to replace current electric fuel pump with something better, waiting till warmer weather to investigate), I'm now wondering if anyone has tried an alternate muffler for their undercar exhaust, as the factory parts leave a less than desirable, raspy sound. Reminds me of the mid 2K's when everyone under 22 years old was installing 30 series Flowmasters on their late model daily drivers. Harsh, no real character if you catch my drift. Looking for more of that smooth burble/rumble, hard to describe in writing.
I watched a video on one of the Facebook groups for ERA owners recently... A guy named Rick Mignone had a nice Slabside with a good rumble. He's here in MA. I will ask if I can track him down!
Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, ERA 289 roadster hybrid, mystery Ford powered 2dr convertible
Posts: 12,763
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Quote:
Originally Posted by krausewich
I watched a video on one of the Facebook groups for ERA owners recently... A guy named Rick Mignone had a nice Slabside with a good rumble. He's here in MA. I will ask if I can track him down!
Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, ERA 289 roadster hybrid, mystery Ford powered 2dr convertible
Posts: 12,763
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Quote:
Originally Posted by spdbrake
Love to. I'd like to check your GT500 as well.
Great meeting you and your wife yesterday, hopefully you got where I was going with the tone of the exhaust. Look forward to getting out in the countryside with you guys in the spring.
Bill S.
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I note those are 2" inlet and outlet, with a 3.25" thick case. All good as long as ground clearance is sufficient. Obviously those with higher HP engines would be looking for bigger inlets and outlets on their mufflers.
Like Rick, I am also running the Dynomax Performance 17762 mufflers.
It's essentially the ERA under car exhaust, but it turns out before the rear tire. It's tucked up under the car and the exhaust sounds great from idle to full throttle with a nice tone.
Other setups are less restrictive and will provide more horsepower, just depends what you are looking for.
There are some photos on page 23 of my ERA FIA build thread.
Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, ERA 289 roadster hybrid, mystery Ford powered 2dr convertible
Posts: 12,763
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Quote:
Originally Posted by tkb289
Bill,
Like Rick, I am also running the Dynomax Performance 17762 mufflers.
It's essentially the ERA under car exhaust, but it turns out before the rear tire. It's tucked up under the car and the exhaust sounds great from idle to full throttle with a nice tone.
Other setups are less restrictive and will provide more horsepower, just depends what you are looking for.
There are some photos on page 23 of my ERA FIA build thread.
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Muffler Alternatives
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