I am not able to use a T bolt, the whole upper half of the mounting hole broke off. Good idea to try, but unable to with this.
Went out today and looked for numbers and this is what I found:
1. Stamped number on end of drivers side head: A 273 - 11 - 5
2. Casting number on drivers side of engine block: 2465330 - 1 ( From what I have been able to figure out this number is for 273 LA - series small block made between 1964 and 1966.)
3. Numbers I found on block on passenger side: 10 - 30 - 6 ( Do not know what these numbers mean.)
So I guess that if I can find a timing chain cover without the timing mark cast on the cover would be nice. If not I will just bolt the removeable timing mark gauge and go on down the road.
Any additional info about the numbers or other thing to check is appreciated.