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What changed 4.5" stroke?
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02-17-2026, 04:13 PM
hojs69
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Join Date: Aug 2003
Location: Pacific NW by way of Detroit, Tampa, San Diego
Posts: 443
The article was in Engines in 1962 and titled, "Get 523 Inches from a 389 Pontiac."
Perhaps folks can grab it online.
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