Thoughts, Advice on block porosity

[BigBlueIron]

Pulled a block out last night to look over and do a few oil mods to in anticipation of a future low buck grenade motor. I believe this to be a late model 360 that has never been gone through. Stock bore nothing out of the ordinary so far with the exception of the attached pictures... First FE block Ive had like this, there was also an area along on the pan rail about an 1.5" with several porosity holes. I forgot to snap a pic of that area but it is much worse but in an area that shouldn't effect anything.

Has me a little concerned since I'm shooting for 400hp on this build with some questionable parts, or maybe this is the perfect block for such a build? If I was building something for a driver I wouldn't worry about it.

What are your thoughts??

[blykins]

Show a picture?

[BigBlueIron]

pic 1

[BigBlueIron]

Pic 2

[BigBlueIron]

pic 4

[BigBlueIron]

Bearing from this journal, no abnormal wear or bad indicators.

[BigBlueIron]

Show a picture?

Took me a minute to resize everything..

[jayb]

That's not close to a water jacket, I wouldn't sweat it.  And I would say that any 360 block ought to be able to take 400 HP.  Build that low-buck grenade LOL!

[BigBlueIron]

That's the plan, wasn't so worried for no more power then I plan on, just more curious how often anybody else sees this and has it caused them any issues.

[blykins]

I have never seen that before....

[BigBlueIron]

Area along the pan, I was mocking up to drill and tap for an FT oil pickup. Ugly...

[BigBlueIron]

Not sure it matters but I thought I would note this is a mirror 105, 3 web block. I think D4TE Not positive, I can check all the block numbers if anyone cares to know.

[Qikbbstang]

The first FE block I ever "picked" up was a warrantied 390 short-block laying around the shop at the Ford dealer I worked at. It had a pin-hole leak about half-way down a cyl's bore.  There's even a part in the shop manuals that show where leaks can and can not be repaired. I always kept it in my mind that "boring" a block could uncover a pin-hole, though I never heard of it happening to anyone..

[C6AE]

The first FE block I ever "picked" up was a warrantied 390 short-block laying around the shop at the Ford dealer I worked at. It had a pin-hole leak about half-way down a cyl's bore.  There's even a part in the shop manuals that show where leaks can and can not be repaired. I always kept it in my mind that "boring" a block could uncover a pin-hole, though I never heard of it happening to anyone..

I've had that happen more than once, but only when installing sleeves, and then it doesn't matter...

[cjshaker]

Maybe it's just me, but it looks like there's a hairline crack extending from the oil hole over to that porosity hole, which would concern me enough to have it magnafluxed. Maybe it's just dirt, or an oil streak. Chances are you wouldn't have any trouble at that power level, but I would do it for piece of mind. A crack will only do one thing, get worse.