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impstocker · 09-19-2015, 07:14 PM

Another thing with BBC, 396-427 OEM are internally balanced while OEM 454 are externally balanced. You put the wrong flywheel on won't take long to break crank. That I have seen. My 396 right now is Externally balanced because it really is a race motor, not OEM. I would assume inbalanced stuff would break.

Will L

09-19-2015, 07:14 PM	#26
impstocker Member Join Date: Dec 2008 Location: Wingdale, NY Posts: 302 Likes: 27 Liked 53 Times in 16 Posts	Re: Stock Elem Crankshafts?? Another thing with BBC, 396-427 OEM are internally balanced while OEM 454 are externally balanced. You put the wrong flywheel on won't take long to break crank. That I have seen. My 396 right now is Externally balanced because it really is a race motor, not OEM. I would assume inbalanced stuff would break. Will L