The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Starting 1966 Factory Short Bed Build, Bagged, 383 Stroker and Muncie M20 4-Speed

SCOTI · 08-13-2021, 11:58 AM

What I learned when investigating the subject of controlling noise:

Covering everything costs more. If you don't mind the additional expense, installation effort, & weight.... 100% coverage isn't bad.

If you're simply trying to remove the 'tin-can' reverb from all the large, flat, steel panels.... partial coverage @ strategic locations gets that job done. Smaller sections/area with curves or hard angles don't really have an issue w/vibration or 'tinning'.

A sound barrier over the vibration isolating mat is what helps reduce exterior noise levels.

High end vehicles utilize a vibration absorption layer which typically also has some temp barrier shielding (the cheaper quality of the product typically = the cheaper the temp insulating ability).

On top of that, a sound absorbing closed cell foam barrier is added to absorb... noise.

On top of that is a mass loaded vinyl barrier to isolate what's happening below keep it from your ears.

On top of that is carpet w/jute again in strategic locations.

08-13-2021, 11:58 AM	#682
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,915	Re: Starting 1966 Factory Short Bed Build, Bagged, 383 Stroker and Muncie M20 4-Speed What I learned when investigating the subject of controlling noise: Covering everything costs more. If you don't mind the additional expense, installation effort, & weight.... 100% coverage isn't bad. If you're simply trying to remove the 'tin-can' reverb from all the large, flat, steel panels.... partial coverage @ strategic locations gets that job done. Smaller sections/area with curves or hard angles don't really have an issue w/vibration or 'tinning'. A sound barrier over the vibration isolating mat is what helps reduce exterior noise levels. High end vehicles utilize a vibration absorption layer which typically also has some temp barrier shielding (the cheaper quality of the product typically = the cheaper the temp insulating ability). On top of that, a sound absorbing closed cell foam barrier is added to absorb... noise. On top of that is a mass loaded vinyl barrier to isolate what's happening below keep it from your ears. On top of that is carpet w/jute again in strategic locations. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*