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Update: The cab and is fully Dynamat'd, every surface. Also the firewall in the engine. Soundproof Cow's Quiet Barrier has been placed on every vertical surface in the cab, as well as the ceiling. The doors have Dynamat in the lower portion, that you can access under the panel. Previously, I...

Yeah, I'm doing dynamat everywhere in the cab. inside the lower part of the doors and on the rest of virtually every inside surface except the dash console (I'll remove and do the wall behind it) and the windows. Though I did read that acrylic is better at sound insulation than glass and I'm...

Just an update. I started putting dynamat in the cab. I also did a frequency measurement in the cab with the engine running. The two highest peaks were at 38Hz and 75Hz with a lesser peak at 115Hz. The more I look into sound insulation, there's really a great deal out there (especially when...

That could be a consideration. I do have plans on a custom paint job down the road...dazzle camo.

So, I got the actual hood liner material up: As you can see, I got pretty good coverage and after doing the same decibel test I get 101 outside, 10 feet in front of the engine and 105 decibels from inside the cab, at idle... So, a little disappointing. In a way, it's not surprising. After...

The material I'm using has a self-adhesive backing. If it comes off, well, I'll just worry about that when it happens. I'm sure it will over time, but I open the hood enough that I'll probably notice if it starts to come loose.

I thought I'd apply the .067" sound insulation to both sides of the firewall. I know I won't be able to get complete coverage on the engine side but I figure it might help. Part of the purpose of the insulation in the engine bay is to redirect (bounce) the sound and this is what I'm hoping to...

This is gonna be an ongoing thread as I want to include both the hood and the cab. My general plan is a thin underlay followed by something thicker. For the hood, I also plan on doing the firewall, at least with the thinner layer. Then a thicker hood liner I did a bit of searching on the web...