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I didn`t check the gap as Speed Pro pistons don`t require it, even so I realize I still should have. We are running straight water, no antifreeze. it runs super cool, at idle you can leave the electric fan off 10 minutes and it`ll only get to 210. It`s one of the coolest running small blocks I`ve seen. If the ring gap was the issue with the top ring wouldn`t it show up on the compression test? I realize the 2nd ring is just a scraper but it runs far cooler than the top ring so it doesn`t require the same amount of gap.
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