Ss 396 + m21 ?
 

Hi... How many of the 970 SS 1972 cars had a 4-speed M21 transmission?

well 942 cars had the m21 if it was an option there could be no way to tell so it looks like one the 350 or the 396 had them so split the up i would just cut 942 in half an say there was not alot ,i think the 350 was putting out more hp at 255hp to 240hp for the 396 they took huge drop in hp in 72 from 71 an 70,another thought to is there were 3 choises for trans options too there was the m20 m21 an m40