Quote Originally Posted by gregs78cam View Post
Have him also look up one for an application that is known to definitely have a '7747, and see if it is the same as one of the above. Then use the other one which will probably be for an Auto.

Just like AutoZone: for 5.7
SU154 - '88-90 both trans, '91-95 man. = '7747
SU169 - '91-95 auto only = '6395, '8625, '7040, '7427

I have a feeling that this will also tell us the answer to the question of a '95 5.7 man. '7427. It may not exist. If they say a '95 manual uses the same KS as a '7747, then a '95 man. ?must? be '7747.
Well my son confirmed the knock sensor for 1995 5.7L Manual is same as 1990 1227747 C3 knock sensor.

SO he is going to get the one listed for 1995 5.7L auto which we know is 16197427 with knock module in Memcal.

If you ever see Kid-Neutron here give him a thanks for the research.