Quote:
Originally Posted by bullitt5897
Going to 8400 or even 8500 is fine on the stock motor for limited duration but you run a higher risk of breaking something. 1slow370 has been running 8700rpm on a stock crank for thousands of miles but he is also dry sump.
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He is only running 8,300 rpm on a stock crank with bmw m5 con rod bolts. Bottom end is oem besides those con bolts.