My '62 Bel Air with the stock 235 had "sound deadener" in the air cleaner lid as well. It did more harm than good though, because under acceleration it would suck down and choke off the airflow. So I removed it and it was much better. You might be better off without it.


1946 GMC Pickup - S-10 Frame, 455 Buick, TH400, original patina.

My 46 GMC on Photobucket