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Old 02-15-2026, 07:03 PM
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ponjohn ponjohn is offline
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Join Date: Mar 2002
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Default What changed 4.5" stroke?
I've seen a number 4.5" stroke stock block combos lately. In addition, one 4.65" stroke stock block combo.

Not long ago this was -
  • Keept it under 5500 rpm
  • Side loading is exponential with rpm
  • Piston skirt exposure
  • Etc, etc.

What changed?

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