Just had a head gasket go in my '86 Silverado with 305 cu.in. I noticed a inconsistent miss ever since I bought it, and thought it might be a coolant leak. But it was barely noticeable, so wasn't sure. I'm guessing it was over-heated before I got it... it only has roughly
97,000 original miles. How much does age have to do with head gaskets?Thanks, GC