Hallo, I am new on this very interesting page. I have a 1983 Silverado with 6.2 and TH700. I have been driving the car daily since 15 years. Engine was rebuilt 3 years ago and the last year the car have been in small pieces - frame of restoration. I am now getting close and I am really looking forward to have the truck back on the road again. One thing I had as an aim was to have the cab quiet. I have insulated with Hush mats, new fire wall insulation, all rubber sealing new and new - what I thought - right type of muffler. But now when Im doing the first test rides I am disappointed. Still some kind of resonance - not a good sound level in the cab.
First I tried Walker muffler 18124, not good at all. Now I have Walker 17845 which I was told should be the right one for the 6.2. But no, not good. I can see that P/N 14063795 is GM part number. Anyone that have any idea how I can have a quiet ride?
Andreas Wickman, Gotland Sweden