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Old 04-05-2020, 09:14 AM
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Tom Vaught Tom Vaught is offline
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Thanks! Learning some new Pontiac Info on 1966 421 Blocks.
This discussion started, as many know now, years ago with the 1964 Royal GTO magazine article and Wangers/Schornack attempts to pass a 421 engine off as a 389 tri-power engine.

Tom V.

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