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Old November 10th, 2013, 02:30 AM
Vern Vern is offline
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Join Date: Aug 2013
Location: North Idaho
Truck: 1966 GMC 1/2 Ton
Age: 54
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Default Blown head gasket vs. cracked block

Ok, folks when I got my '66 (inline 250) there was lots of white smoke coming out of the tailpipe that I chalked up to bad gas and a messy carb. However, after only 20 mi on it, I found the crankcase is down a couple quarts and the rad is dry. Is there a good way to determine if I just need to replace the head gasket or if the engine is toast (cracked block)? The compression is pretty good and reasonably uniform across the cylinders. Ideas? Thanks!
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