Sound insulation of doghouse

Thanks it looks like a job worth doing.

I used metal faced sound absorbing foam in my chevy 454 doghouse.

http://www.mcmaster.com/#standard-foam-acoustical-insulation/=yal4n0

from McMaster-Carr. I used metal tape(The kind that insulators use) to hold it in.

Cut and shaped the pieces and taped them in.

On our F-53 based coach, I removed the cheesy 1/4" aluminum/foam liner that was originally installed, at least what was left of it. I replaced it with "B-Quiet Hliner", a 1/2" thick thermo/acoustic foam with a reinforced aluminum skin on both the doghouse and under the driver and passenger side floors. According to the manufacturer, "It reduces engine noise in the interior of the vehicle and also reflects the majority of the heat from the engine." My before and after sound measurements showed about a 10dB reduction at 2,000 RPM stationary. On the road, we've also found a noticeable reduction in the temperature of the dog house after several hours of travel.