331 Caddy Freeze Plugs question

I'm somewhat familiar with how freeze plugs are replaced on SBC motors but have no clue on caddy mills.

So here are a couple photos..
It's a 53' 331





It appears as though I have a weeping freeze plug and at least one more that's about to go. Am I correct in that's what these photos are showing?

That's question one. Question two is how do I replace those?

The motor is out of the car but I'm hoping to have it cleaned up and back in the car asap.

 

P_retty much the same thing. Pry out the old one, clean up the counterbore. Maybe put some sealer on it. Put the new plug in the hole with the bulge out. Give it a little wack with the ball on your small ballpien hammer. It should expand and seal just fine.

 

word. thanks. I was hoping it was that "simple" haaa.

now to order a couple new plugs and get to it.

 

Pop the old ones in and take them into the parts house (Napa or another serious parts house ) and lay them on the counter and say I need some to replace these. If you have a caliper measure the bore of the freeze plug hole but they should be easy to get.

 

I can get a 9 piece set from coopers for $14. I might just do that. No harm in having extras.... or changing them all while I'm at it.

Can't wait to put this damn thing back in my car. Been off the road a year.

 

Use a driver about 1/2 the diameter of the plug ,flat ended of course. Use a fairly heavy hammer to drive them with. Hitting them with the ballend of the hammer most likely won't expand them enough. Ya sure as hell don't want to blow one going down the road.
PS I like using #1 Permatex on them, just a little do it!!

 

Replace them all while you have the engine out or you will end up replacing the rest of them one at a time in the car. dont ask me how I know this.

 

Ball end works for me but sometimes I need to use a bar between the hammer and the plug. Depends on your working conditions.

 

my garage... my very limited garage.

 

I got all the plugs out and the heads off and what not.

There was a LOT of crap behind those plugs.

So my question now....

What kind of freeze plugs.

I can order them and get I believe aluminum or brass. Or I can go down to the auto parts store and get the rubber ones. I picked up a couple rubber ones on sat but they were too big.

The rubber part seems to be too big but the outer part is right on. Don't seem to be perfect fits. I'll try a one inch tonight maybe.

Which is the best way to go as I don't want to have to look at these things again.

 

Brass are the best, they last the best. Those rubber things are bandaids!
Use a socket to install if you don't have the correct tool.
Find a socket that fits the freeze plug, with an ext installed pound it in with big
hammer....it's hard on the ext though

 

I ordered the next round of stuff last night.

Got a master gasket set. Set of brass freeze plugs. Some plugs and some blue caddy engine paint.

Thanks for the help.

 

No socket for your kind of plugs. Sockets are for the cup kind. No rubber ones. Brass or steel are OK

 

Hi, my 53 Cad Conv popped a core plug yesterday.

Can you buy the right sets online anywhere, i'm in the UK so nlikely to get them off the shelf here

 

You can usually buy core plugs by diameter. Or if you have an unusual size you can (I have) turn the diameter of a larger plug you have to the diameter you need. Assuming you have a lathe to use.

 

Where did you get the Caddy paint?