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Doug, from your description it sounds like the power loss you experienced was from a rod bearing seziure. Although there are others here who know a lot more about this than I do, IMHO, 7500 is a bit much for stock rods under race conditions. If you can, you might take your motor apart and check the rod bearing clearances with plastigage. Carello rods or something similar would give you a rock solid bottom end if you want to turn 8000.
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Jim
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'70, 1750GTV, 2nd series
'62, Lancia Flaminia Zagato3c, 2nd series
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