Thread: OM606 Head on OM603 Block?
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  #7  
Old 06-11-2021, 03:15 AM
Felching Felching is offline
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Join Date: Nov 2020
Posts: 188
500+ engines are not stock, or don't survive long when they are. Forged rods are minimum in 500hp+ builds and run in excess of 6000rpm.
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