98 GMC Sierra - Engine Burning Coolant - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BigBlocksRule · 03-28-2011, 07:27 AM

dw98gmc, if the heads had cracked, you would have known about it immediately.
We bought my son a '99 4wd Tahoe from a guy who was servicing his truck, left it to run an errand, and meantime his wife jumped in it to go to town. Ran it completely out of water and cracked both heads. Unlucky for him, lucky for us since we already had a strong 383 to drop in its place and this is the exact situation we were looking for.
I'd probably run a compression test, see if you're losing compression from one or more cylinders. If they all test the same or very similar, leave the heads in place and swap the intake gaskets. If you get one or more that are way down, time to pull the heads.
Good luck, my bet is they're fine.

03-28-2011, 07:27 AM	#11
BigBlocksRule Registered User Join Date: Jun 2008 Location: Lubbock, TX Posts: 2,047	Re: 98 GMC Sierra - Engine Burning Coolant dw98gmc, if the heads had cracked, you would have known about it immediately. We bought my son a '99 4wd Tahoe from a guy who was servicing his truck, left it to run an errand, and meantime his wife jumped in it to go to town. Ran it completely out of water and cracked both heads. Unlucky for him, lucky for us since we already had a strong 383 to drop in its place and this is the exact situation we were looking for. I'd probably run a compression test, see if you're losing compression from one or more cylinders. If they all test the same or very similar, leave the heads in place and swap the intake gaskets. If you get one or more that are way down, time to pull the heads. Good luck, my bet is they're fine. Last edited by BigBlocksRule; 03-28-2011 at 07:28 AM.



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