Is this MQ stamp legit?

[Rallyegreen68SS]

I'm looking for a dated block for my 68 L78 Camaro, build date was January 21, 1968. Original block is long gone. I came across this one, I see the broach marks, but was curious about the MQ stamp, spacing seems odd to me. Any experts care to chime in?

[PeteLeathersac]

'

Both appear to be later builds than yours but there's a couple examples in these two threads...
:beers:
~ Pete

https://www.yenko.net/forum/showthread.php?t=142850

https://www.yenko.net/forum/showthread.php?t=131143&page=5


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[cook_dw]

Do you have better photos you can send me? Also the vin. Email in my dig.

[L78M22Rag]

That’s a strange irregular spacing between the M and the Q?

[Rallyegreen68SS]

That's the only picture I've got of the prospective block. I do not have a VIN # for the prospective donor block. The block I have is mid November 1967 stamp date, but there are cracks by the cam journals that likely leak water. Spacing of M-Q on that block is virtually identical to what Pete posted above of the later blocks.

[bergy]

I have two different "Q"s, but none like the one posted. Could have been more different ones though. Anybody have that Q with that straight cross stroke? I have seen a long and a short cross stroke - but curved.

[rszmjt]

That's the only picture I've got of the prospective block. I do not have a VIN # for the prospective donor block. The block I have is mid November 1967 stamp date, but there are cracks by the cam journals that likely leak water. Spacing of M-Q on that block is virtually identical to what Pete posted above of the later blocks.


Can you post a picture of the cracks? And that stamp?