455 flex plate...

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Nov 8, 2012 | 09:44 AM

Stevec

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Joined: Aug 2010

Posts: 970

From: Southington,Connecticut

455 flex plate...

Was wondering what most guys are using for a flex plate? Externally or internally balanced? Engine will produce 450/475 hp.

Thanks!
Steve...

Nov 8, 2012 | 10:33 AM

TripDeuces

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Joined: Jun 2010

Posts: 3,613

From: Rogues Island, USA

The 455 is externally balanced unless you changed it. That means an externally balanced flex plate. If internal balanced it would be neutral balanced and have no weights.

Nov 8, 2012 | 11:37 AM

chadman

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Joined: Mar 2010

Posts: 1,076

From: Wakeman, OH

For a street car in the 450/475hp range a regular old stock external balance flexplate is fine.

Nov 8, 2012 | 08:07 PM

SBORule

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Joined: Mar 2011

Posts: 370

From: Orlando, FL

I agree, I make way over 500HP when I use Nitrous, never had any problems with a stock flexplate or anything else for the last 25 years.

Oh, my engine is externally balanced.