Oh No We Popped a Freeze Plug 

I've seen dozens of engines with "freeze plugs" pushed out of block. About as often as not blocks were cracked. Once tried to save a Mercury 410, one of the heads were also cracked.

@@tombryant1104, I've seen a cracked lifter valley of a 390 in FLORIDA. Happened in the 1970s.

So my transmission went out nd my first time doing one and all I used was water bc I didn’t care that much so it been like 3 months nd my plug just missing I hope that the case

Thanks. I got coolant in my hair.

Where I'm from, we've always called them 'Welsh plugs'.

Sometimes, I have to call time of death. Cam would have had the whole engine on the floor if I let him. The pervious owner had done the rear drivers side, he seems like the kind of dude to take care of a mild clean out. Unless there was a ton of sand, I would not be concerned.

Yes, makes no sense NOT to drop it down and flush that block. I wonder what the thermostat area looks like. IMHO.

@@robertclymer6948 Very true!

Yup I've swapped many a motor, ALWAYS knock out the core plugs, flush and replace.

It could but honestly it wouldn't do much. that area of the block is kind of the "end of the line".

Interesting. See how I did that? Affermation without tipping my hand.

Thanks domfer2540! I wrote that down.

Brass plugs, absolutely

Only real way is to pop the freeze plugs...errr core plugs out and root around with tools. Some applications will be tough to get at the plugs without pulling the engine. My final word would be, if you aren't experiencing overheating, is it worth yhe hassle? We only did what we did because of the popped core plug.

Not normally. Ususally only see this issue on blocks that are original or quickie rebuilds.

Hey Tom. I still have a tester and use to test before I put the Mustang up for the winter. Just piece of mind i guess Tom. Michigan can get well below zero in late Dec and January. I got to get a natural gas line run to the garage and put in a heater for sub zero days and working on it in winter.

Hahahahaha. I like sturring the pot.

Sometimes, that pey bar is a helpful hindrance.

@@AutoRestoMod Right!!!??!!!

I got nothing...

@@jwrockets I bet Jeff does……

How bout a little hint????

@@robertclymer6948 think Christmas

@@RealWorldGarage Christmas Vacation with the Griswalds? Oh man I'm digging here! lol

I looked online. "All center oiler blocks that I've seen have press in plugs. All side oiler blocks have screw in plugs. Did they make some exceptions? Probably. You can install screw in plugs where press in units were with a good machine shop at hand." Maybe you have a 427 side oiler. 😁 If so, there'll be visible bolt heads for the cross-bolted main bearings. Ford sold these screw in plugs as a kit for small block engines. They were also a design feature for the Boss 302.

Keep in mind that those plugs are also something you can add.

I don't know