Super M motor appearence

Mon Mar 31, 2008 6:30 am

Are there any pysical appearence differences in a Super M motor vs. a 400 motor? Can you tell the difference by looking at them. The serial number on the block by the dist. only has 4 numbers, no letters.??

Mon Mar 31, 2008 7:23 am

According to my books, the Super M and 400 both used the same engine. Serial cumber should begin with C264. The non Super M engine however is different with a serial number beginning with FBKM