Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - transmission identification--350
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Old 11-01-2002, 01:56 PM
bobthetran bobthetran is offline
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The r 4 is used to identify that particular case casting. if they found the r4 casting was defective the could trace it back to the particular casting core and repair or replace it.The core is the mold they made that particular casting from at the foundary.I hope that answers you're question. bob
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