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Old 12-10-2012, 11:13 AM
GMR GMR is offline
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350 sbc coolant drain plugs

Having a problem getting the drain plugs out. The engine is in the car. The block is a 3970010 casting. If I break them or some other bad news, I'm thinking my only option would be to drill them out and try to tap the hole to a bigger size. Are there other options?

My goal is to change the coolant but I don't want to create a disaster to accomplish that.
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