Thread: 383 or 406 sbc
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Old 08-23-2012, 06:48 PM
  #24  
zipper06
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RACING JUNKIE
 
Join Date: Jan 2006
Location: La.
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I think the high RPM's was mentioned with a missed shift or something broke when it happened. You have to realize and engine may do that when it's not under load (flash RPM) but they won't live under load, no matter who builds them. Look at NASCAR engines 3.625 stroke runs 500 mi. running up to 9500 RPM's, but cost a Zillion dollars. Case in point, was a cast crank VS a forged crank. A cast crank would not last 10 laps in a NASCAR engine. Like i said in a previous post, the mfg'er don't recommend turning them over 6500, and that's for a good reason.

JMO

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