bias ply tire memories.
Our first Mopar Nationals when it was at the Chelsea Proving Grounds, there was a very nice condition black 62 Imperial with a 413 sono-ram and bias ply tires... We went on a track tour and when we got back to the small oval track where the gathering was, everyone waited to go into the u turn and return to the meet area... We were about 8 cars behind the 62 Imperial in line when it was his turn, man that thing just sat there while spinning the tires and making a HUGE cloud of smoke and slowly started moving forward... He left a good set of burnout marks....
That was the first time we saw a sono ram engine...
Very impressive...