I want to thank all who have offered suggestions and comment on my 66' Chevy soundproofing project. I just finished it today (5/1/2020). As I mentioned before, I pretty much stripped the interior then started back with a layer of Dyamat, then a layer of jute soundproofing w/aluminum backing and then a new molded carpet from Brothers. I covered the entire floor and up the entire height of the firewall. (That was fun!!!) Also installed a new rubber firewall pad.
And speaking of the rubber firewall pads, wouldn't be nice if they could make them to fit? The passenger side was fine. The driver's side was joke. And how many of the rubber firewall plugs have you ruined? I found a secret. I ground off the point of an old Phillips Head screwdriver to push them in with and put a dab of some really soft wheel bearing grease on the tips of the plugs. It wasn't foolproof but with a sharp rap they usually popped right into place. Also use a screw driver slightly smaller than the hole in the plug. If it's the same size, the plug will not go into the hole.
It was a job!! But the worst part was finding all the little screw and bolt holes under all that soundproofing. Like the two small screws that hold the fuse panel to the firewall. I think I spent over an hour just getting the gas pedal bolted down!! And getting all 8 seat bolts just right was also a project. I know I could have cut bigger holes for the bolts but I get way to fussy for that.
Anyhow, this afternoon was the moment of truth. Yes, the cab was much quieter now but not as much as I had hoped for. And now the road noise is diminished, the wind noise is more noticeable!! But I hate to admit defeat, I still love my truck. I think Wrenchbender Ret. had it right weeks ago when he said these trucks were not built to be quiet. So turn up the radio and live with it - right!!!!
REUP
