318 freeze plug 1968 Plymouth fury III

[stu’s68furyiiirat]

I crawled under the ole girl today starting to take transmission out and notice the freeze plug where leaking or driping not sure which but any help would be great on advice on Steel or brass which is better and should I do them all or the 2 that I can see leaking and does any know the sizes

 

[Big_John]

Brass is the way to go.

An option, that may be easier to install, would be these Dorman Products - 02483

You'll have to double check the size... I've read that these are often used by boat engine builders in new builds. They make rubber expansion plugs too, but I think those aren't quite a permanent fix.

 

[stu’s68furyiiirat]

Brass is the way to go.

An option, that may be easier to install, would be these Dorman Products - 02483

You'll have to double check the size... I've read that these are often used by boat engine builders in new builds. They make rubber expansion plugs too, but I think those aren't quite a permanent fix.

@Big_John thanks for the advice
I’m going to try to replace them like oem style but brass would you use Permatex #2

 

[twostick]

If that's a small block, do not put the trans back in without first replacing the the freeze plugs in front of the flex plate. DAMHIK...

Kevin

 

[stu’s68furyiiirat]

If that's a small block, do not put the trans back in without first replacing the the freeze plugs in front of the flex plate. DAMHIK...

Kevin

These are the ones on the side of the block I think my ones in the rear are bad as well

 

[3175375]

Are there freeze plugs on the front and rear of the heads as well? IIRC, they are there for a big block, but I can’t remember if they are in a small block.

Regardless, if they are there, replace them too.

 

[Toolmanmike]

Are there freeze plugs on the front and rear of the heads as well? IIRC, they are there for a big block, but I can’t remember if they are in a small block.

Regardless, if they are there, replace them too.

The core plugs in the heads rarely leak. It's easier to get the casting sand out would be my guess.

 

[stu’s68furyiiirat]

The core plugs in the heads rarely leak. It's easier to get the casting sand out would be my guess.

They are right above oil pan so o am going to pull the motor and do them all to be safe

 

[david hill]

To avoid revisiting this again I would recommend replacing all freeze plugs. w/ the age of the engine being a 1968, total freeze plug replacement would be cheap insurance against future failure. As @Toolmanmike stated the cyl head freeze plugs rarely fail. They do develop thin spots due to corrosion so for no more than they cost just plain change them. It will seem like a lot of effort, but engine removal is the easiest way to change them all w/ superior results.

 

[michiganhotrod1]

Performance Tool W89737 Performance Tool Frost Plug Remover/Installer Sets | Summit Racing

I've done a few of these jobs in my day. The above tool is a real help in getting them inn correctly.
Mark

 

[Mr onetwo]

good quality set of plugs Mancini Racing Brass Freeze Plug Kit