I guess I have been real lucky for the last 53 years.The ONLY over heating issues I have really ever had was related to timing.Retarded timing was the issue.I have never checked clearance on any of my water pumps.I have used 4 bolts(still have one running,8 bolts and 11 bolts.Had a little issue with my 62 GP once in high heat weather and extended traffic idle untill I put a shroud on it.Tom
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