Help identifying source of coolant leak

[Shran]

Cross hatch is not indicative of a rebuild, every cylinder will have some when the block is initially machined and if it's bored or honed during a rebuild then that cross hatch will be restored.

If you use the two piece lower intake gasket (vs the one piece you had before) make SURE you use a LARGE bead of RTV on both ends of the valley... the gap that it has to fill is relatively large and it needs quite a bit of RTV to fill the gap when you install the intake. Let it cure for probably a full 24 hours too. It is not real fun to have oil vapor blasting out of there because there was not enough RTV... made that mistake once.

 

[RussAdams]

Cross hatch is not indicative of a rebuild, every cylinder will have some when the block is initially machined and if it's bored or honed during a rebuild then that cross hatch will be restored.

That makes sense. I found an interesting aluminum tag glued on the drivers side of the block closest to the firewall.

And some cryptic numbers on the block. Maybe regarding new rings installed in some of the pistons?

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[RussAdams]

If you use the two piece lower intake gasket (vs the one piece you had before) make SURE you use a LARGE bead of RTV on both ends of the valley... the gap that it has to fill is relatively large and it needs quite a bit of RTV to fill the gap when you install the intake. Let it cure for probably a full 24 hours too. It is not real fun to have oil vapor blasting out of there because there was not enough RTV... made that mistake once.

I'm ready to put the intake manifold back in.

Is this where I should put the extra RTV?

Anywhere else?