67chevmall, you got a extra digit or a incorrect digit in there.
K05010 GA
K= McKinnon Industries St. Catherines, Ontario
05= May
01= 1st
0= This is extra or incorrect(possible stamping error)
GA= 1965, 66, 67 283ci or 1968 307ci or 1969 327ci. All Impala motors.
If your extra 0 is a C then your suffix code is CGA
CGA= 1971 350ci or 1975/6 262ci
Can you double check your stamped application code(K05010GA) and get your casting number and date code off the block. Here is a pic showing locations.
