K-Seal?

[The Reverend Bluejeans]

K Seal is dreadful stuff, but a decent rad sealer is ok. Steel Seal is very good for head gasket dramas.

[PhilA]

A Chevy one fits in the space but is not as tall, the outlet pipes are too small and point the wrong way and there's no provision for the heater return.

I don't want to get this one recored, the top tank especially is too brittle, that's what keeps failing.

Seems that's about the cost of a custom built radiator, here.

[PhilA]

K Seal is dreadful stuff, but a decent rad sealer is ok. Steel Seal is very good for head gasket dramas.

Name some products? I'm curious because I've only seen K-Seal here.

[PhilA]

Is it possible to fit in a non Pontiac radiator even as a temporary measure? Especially if the area is massive, a trip to a junkyard might find something cheap and usable.

There are no junkyards with anything older than about 15 years here.
This radiator is an odd form-factor by today's standards (taller than it is wide) and the big old boat anchor of an engine needs every square inch of cooling it can get.

I could probably get a junkyard radiator but... It's just as old as the one I have and will 99% chance be leaking too.

[FatherJack]

As Eddie says don't bother with the stuff. I have never had much success with it and all it does is clog the heater.

I threw some sealant like that into a 1986 Ford Aerostar that had to not leak on a banger rally.
Imagine driving through France and Spain in January when the heater matrix had choked on sealant, I was not popular.

I did get a GMC G20 radiator re-cored for less than the cost of a new unit but the Aerostar had plastic end caps so that wasn't an option.

Does it have a transmission cooler in there as well ?

[Eddie Honda]

I don't want to get this one recored, the top tank especially is too brittle, that's what keeps failing.

If the core is fine, just get the top tank replaced.

[Eddie Honda]

Temp fix it from the outside rather than pouring shit inside?

ezgif-1-dfd86ac2f1.jpg (112.11 KiB) Viewed 361 times

[PhilA]

Both the core and the tanks are starting to fail.

It's leaking from way up in the middle, where is nearly impossible to get to externally. Being honeycomb, it's a weird design to begin with.

No transmission cooler.

[FatherJack]

Are there any truck breakers that might have more to pick through, its quite a big unit

This one would fit your hoses,
https://bigdogauto.com/i-24760659-three ... c8960.html

[PhilA]

Bottom hose on the wrong side, facing the wrong way.
No heater return.

Any breakers likely to have something are a couple hours away and I might as well save my money, radiators have a hard life in the south with high temps and lots of flies.