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Alex Hayley · 08-03-2010, 03:27 PM

I used an internally balanced crank (Scat 9000) in mine. I have not heard the "internal if above 5000 rpm", but I could not imagine building my 406 and not turning it higher than 5000 rpm.

08-03-2010, 03:27 PM	#3
Alex Hayley Registered User Join Date: Jul 2000 Location: NC Posts: 987	Re: 406 vets needed I used an internally balanced crank (Scat 9000) in mine. I have not heard the "internal if above 5000 rpm", but I could not imagine building my 406 and not turning it higher than 5000 rpm.