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Old 04-25-2021, 12:00 AM
PDUB PDUB is offline
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Join Date: Jul 2003
Cobra Make, Engine: Unique Motorcars 289 USRRC, 1964 289 stroked to 331, toploader
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You are reading the casting number of the block. It is basically an engineering number. The second line is a date code. Sometimes they are difficult to read... PM with a photo if you want.
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Paul

Unique Motorcars 289 USRRC
1964 289 5-bolt block
Toploader and 3.31 rear
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