Got A Leak...and It's A Slow One.

[MnTom]

What is the most likely cause of the cracking? Excessive heat/egts?

No, the place the block cracks is down lower on the side. There is no cause that you can point to and say with all certainty "That's IT!". Speculation is the casting was reduced there as a cost saving measure or defect, or the way the engine mounts are on the truck contribute to the cracking. The worst blocks are the "53" blocks and obviously some of the "55" blocks.

[Kotta390]

Thanks guys for all the advice. I pray something will band aid for now until I can get a replacement block

[joecool911]

Cheapest bandaid is keep filling with water, but watch freezing temps. Plug in at night when freezing.

[hex0rz]

Hey, did you ever get this thing fixed up? What'd you do? Got any pictures?

[skellyman]

Wondering if you found a block or did a band-aid repair ?