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Old March 10th, 2014, 03:49 AM
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Rockdriller Rockdriller is offline
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Default Re: Blown head gasket vs. cracked block

Howdy, Vern.

Good to see ya.

IME, the weak spot prone to freeze damage on the I-6 is external, just above the freeze plug (ironically) under the manifolds.
I've seen 4 or 5 with the same failure. At least two were 292's....but I do remember a 250/230 or two with the same pattern.

But that's not the only way to crack a block, as we all know.
It doesn't take much compression to puke out all yer coolant.
I'm thinkin if you warmed it up a little, you could pick up an internal crack (or head gasket leak) with a compression guage in the bleed down mode.
You could also pull your thermostat and housing and top it off with coolant (water) and start her up and let it warm up.....and watch for a constant stream of bubbles (or a gusher).

Maybe.

Good luck and keep us in the loop.
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