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They are on the sides and rear of the block. I am guessing that you are referring to the "Freeze" plugs. That term in itself is deceiving as these plugs were never designed to provide any sort of freeze protection. Many old timers call the "welsh" plugs but I suppose because they popped out when an engine block froze, they were incorrectly called freeze plugs. The caps cover casting blocks in the engine and are usually made of metal. The are located on the sides of the block under the heads and exhaust mainfolds but above the oil pan. They are harder to get at then they are to replace. I would suspect that if they failed you usually have other related issues as well. VBdenny

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Q: Where would you find the frost plugs on a 1991 caprice classic 305 Thanks?
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