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Old 02-25-2022, 01:56 PM   #20
66gmcguy
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Join Date: Oct 2014
Location: Bay Area, CA
Posts: 333
Re: Soundproofing a Diesel

Quote:
Originally Posted by 79vette View Post
Did you just have the factory fiberglass insulation? Or did you do any other fancy sound deadening in addition to that (dynamat, etc)?
Yes, just the factory fiberglass insulation on the inside of the cab on the firewall, plus the factory insulation on the engine bay side of the firewall, like the one in the picture a few posts up. Except mine was missing several chunks. I don’t think anybody reproduces that piece that goes in the engine bay unfortunately though.
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