660 Muncie case

[Paul K.]

I have a 69 M20 Muncie, Can someone tell me what the numbers on the passenger side of the 660 case are, there is large 6 ( about 1/2" in diameter), and a small 6 with 2 dots over it, under that is a circle with a line through it.
I have searched the archives, but cannot find.


Paul Klemetson 37278

[Wayne M.]

Re: 660 Muncie case

I have a 69 M20 Muncie, Can someone tell me what the numbers on the passenger side of the 660 case are, there is large 6 ( about 1/2" in diameter), and a small 6 with 2 dots over it, under that is a circle with a line through it.
I have searched the archives, but cannot find. Paul Klemetson 37278

Paul -- here's an "010" case from a '66, but the principle is the same as for the "660". The large number 4 is the casting mould number. I've seen up to 13 in the latter years. The number 2 is second month (February), and the 3 dots under represent the 3rd week of that month -- the casting date of the case. This corresponds to the assembly date stamping of P0308 (March 8th). Now this particular case is interesting insofar as the month number and week dots are supposed to be IN the circle.

[Paul K.]

Re: 660 Muncie case

Thanks Wayne
That makes sense

Paul