bottom of a 426 engine...

is there cast marks on the bottom of the cases that kinda look like cracks or straight lines of extra material? i'm trying to see if this engine has a hairline crack, and i'm not sure if it's one of these things...

The marks your seeing are likley from the casting..... if it were cracks, it would be leaking.

i do have a leak! but they must be cast marks because there are more than one and oil is only coming from one spot.

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