Here is my dilemma. I currently have flowmaster 40 series on my 68 Camaro. (496, solid roller, 3 inch exhaust the whole way out to right behind the rear tires-factory location, about 600 hp). I like the flowmasters ok, but am looking for a different sound. So I ordered a pair of the Dynomax 3" Ultra Flows (14 inch case) and will be getting them tomorrow. I've done a lot of reading on here and am not sure what to do. Its hard to find a decent sound clip, and I sure don't want them to be too quiet. I like some rumble. I like the decibel level of my flowmasters, but not really nuts about the sound. One person says the the Ultra Flows sound awesome, then the next says they are quiet. I don't want to sneak around the neigborhood. I want a good, tough idle. Some say you here more of the motor with the Ultaflows? What do you all think? I don't want to take the flowmasters off and then like the Dynomax even less! Thanks.
Flowmasters or Dynomax ultraflows.
bb489
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I swapped out my Flowmaster 40's on my sbc 355 truck for the Hooker Aero Chambers and I could not be happier. They have the rumble the FM's had, but not the irritating loud cackle sound.
I had the ultra-flows for about 4 weeks and just did not like the sound. I thought they were very cackly (like glass packs) and to my ears only sounded good at wide open throttle. I took them off and put the flowmaster Super 40s on and I think they sound a lot better, even better than the standard 40 series. Again that is just my opinion. Everyone has a specific sound they like.
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and glass packs belong on 4wd trucks.Ive had Ultraflos on mine for 5 yrs or so, 3"-H pipe-dumps at the rear, I love the sound and get lots of comments on how it sounds going down the track. No glass pack cackle here. Flowmasters belong on Mustangs
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Ha, I use the same Magnaflow 12578 as the Chevelle on my Tahoe! Nice sound!and glass packs belong on 4wd trucks.
Mighty strong statement dontcha think?
I have 14+ year old Flowmasters on my car with 3" headpipes and 2.5" tails..I thought they might be restrictive (never made a run open headers yet) but last time I was at the track I went 107.96MPH,107.91 and 108.01 thru the exhaust,so they can't be that bad.
And I have a mild flat tapped hydraulic (223.231 @.050)
Wouldn't mind trying some Ultraflows,but I would need to make an open header pass for a good comparison.
And I have a mild flat tapped hydraulic (223.231 @.050)
Wouldn't mind trying some Ultraflows,but I would need to make an open header pass for a good comparison.
yep, with firsthand testing to back it up. On my old 92 Z28 with the L98 the flowmaster 43083 made 11rwhp less at the peak than the Dynomax 17227 that ended up staying on the car. I think avg loss was 6hp and 4tq. I have more data at home from previous tests, but thats what I have at work.
It's YOUR car, so pick what muffler(s) suit you.
It's YOUR car, so pick what muffler(s) suit you.
41 - 54 of 54 Posts
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