The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 47-55.1 sound deadining

1project2many · 06-26-2020, 08:49 PM

I have owned two TF trucks and in their old, beaten condition the noise in the cab was too high for comfort. When I built my '57 I made sure to seal the doors tightly and used undercoat inside the door skins. I sealed the back of the cabs with new cab corners, sealed up all the seams, and used jute liner under the mat as well as on the firewall pad. The truck was sealed so well the doors wouldn't close unless a window was open. The wind and road noise were gone but the windows couldn't be lowered more than about an inch on the highway. The back of the cab would start to flex and create a low frequency vibration that drove me out of the cab! Folks suggested a number of fixes for the vibration but the real issue was lack of proper cab venting. I have no intention of cutting up the cab at this point.

The only other problem is that 20 years have passed and my door seals seem to be shrinking. I can hear more wind noise than when I restored the truck.

06-26-2020, 08:49 PM	#11
1project2many Registered User Join Date: Mar 2012 Location: Lakes Region NH Posts: 3,158	Re: sound deadining I have owned two TF trucks and in their old, beaten condition the noise in the cab was too high for comfort. When I built my '57 I made sure to seal the doors tightly and used undercoat inside the door skins. I sealed the back of the cabs with new cab corners, sealed up all the seams, and used jute liner under the mat as well as on the firewall pad. The truck was sealed so well the doors wouldn't close unless a window was open. The wind and road noise were gone but the windows couldn't be lowered more than about an inch on the highway. The back of the cab would start to flex and create a low frequency vibration that drove me out of the cab! Folks suggested a number of fixes for the vibration but the real issue was lack of proper cab venting. I have no intention of cutting up the cab at this point. The only other problem is that 20 years have passed and my door seals seem to be shrinking. I can hear more wind noise than when I restored the truck.