Thread: too much interior noise
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11-03-2004 11:48 AM #1
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too much interior noise
Well I finally got the 350 rebuilt & installed in Bufford( a 1948 chevy pick up,chopped ,extended doors & caddy fins on a narrowed 94 Chevy trk bed). I have 2 1/2" pipes & Dynomax turbo mufflers. This combo makes the interior too noise to carry on a conversation..........what to do?
1. reduce the tail pipes to 2 1/4"
2. install resonators aft of the mufflers
3. replace w/quiter mufflers( I have no idea what would be quiter)Last edited by Don Meyer; 11-03-2004 at 11:52 AM.
Don Meyer, PhD-Mech Engr(48 GMC Trk/chopped/cab extended/caddy fins & a GM converted Rolls Royce Silver Shadow).
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11-03-2004 11:57 AM #2
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How well is your floor insulated?
What hangers are you hanging your pipes with? If too solid, the vibration makes it a lot louder.
Do the tailpipes go right out to the back?
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11-03-2004 07:25 PM #3
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The floor insulation is 1/2" thick thru out the cab. The carpet is also 1/2" thick. There is also dynamat thru out the cab.
The hangers were installed at the muffler shop & include a 2" rubber hanger.Don Meyer, PhD-Mech Engr(48 GMC Trk/chopped/cab extended/caddy fins & a GM converted Rolls Royce Silver Shadow).
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11-03-2004 08:08 PM #4
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i had those mufflers on a camaro i built and they were loud i have heard good things about flowmasters new 70 series mufflers it is the quietest one flowmaster makes.craftsman try to turn of the voices in there head. artists listen to them
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11-04-2004 10:11 AM #5
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Thanks for the advice.....does someone know of a link that test the DB's of turbo mufflers?Don Meyer, PhD-Mech Engr(48 GMC Trk/chopped/cab extended/caddy fins & a GM converted Rolls Royce Silver Shadow).
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For sure!! I recall Jim's torsion bar suspension on at least one of his builds, but I'm not sure which one! Maybe the Track T?? He's a talented builder.
30 Model A coupe build begins