Something sure isn't right. You would think that cruising temp would be lower than at lower speeds. At temps that high I would expect that you would be puking coolant all the time..
What are the details on the engine? Compression ratio, cam, intake manifold, heads? Where is the temp sensor mounted?
Would definitely check that the balancer is ok and TDC is correct. The initial timing should be fine, but you can for sure add some more total timing to around 36 degrees.....more at light cruise conditions. What is your target AFR on the sniper and are you tuning with a laptop or just the handheld?
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