Gasrat
01-09-2021, 06:15 PM
These are original bolts left over from a restoration I did years ago on a 1969 Z/28. I used new ones not knowing any better at the time. These are the 8 valve cover bolts with the M marking in the center and the special harmonic balancer bolt TR marking and hole drilled through the head. I’m sure they fit other applications but these are from a 69Z. All threads are good. $125.00 shipped.