Help with BBC Casting number

[TWISTEDJACK]

I am trying to fing this code # on a BBC I just bought it has these numbers on the heads ( I already seached on the code lists I could find)

846236
gm2t
120 74

 

[DEMON44]

346236.....75-87...oval...OPEN...454, 120cc chamber, 225/116cc ports



I'm gonig to go with ...you read it wrong. Often old head castings need some "Eye Trickery" to read.

 

[Goose]

Could it be "346246"???
If so it comes back to:
75-87...oval...OPEN...454, 120cc chamber, 225/116cc ports
According to mortec.com
The "120 74"...
I think it means Jan. 20, 1974 if memory serves.
That would match close enough to a 74 engine.

Edit...
According to nastyz28.com the code with a "3"
comes back on a 74-67 454BBC

 

[TWISTEDJACK]

Thanks I will look tomorrow to make sure but you are probably right.