ZL-1 stamping numbers

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GMH454 · #18 10-01-2000, 02:33 AM

COPO, the 107 is on the outside of the block at the back on a kinda boss at the top of the bellhousing area.
Cast numbers are date 1.28.69, numbers below are 128 number in circle to the right is 6.
Checked Porterfields letter (for which I am very grateful of)and the stamped number on the pad - 1-8880-61-A may be an order number.
McLaren had orders starting with 1-8880- also. Though thinking about it they should have been Can Am (Reynolds Blocks Hmmmm)
Does anyone know what the 107 means and do other ZL-1 engines have numbers on the blocks matching their cap numbers. ANY info appreciated

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