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Small Block/Big Block - Internal or External Balanced?

 

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The question of whether this engine or that is internally balanced or externally balanced. Here are your answers.

 

> 1986 and prior (265/283/302/305/307/327/350) - Internal < >> W series (348/409) - Internal <<
   
> 400 small block - External < >> 396-427 - Internal <<
   
> 1987-1995 LT1-LT4 Opti-spark) - Internal Front/External Rear < >> 454-502 - External <<
   
> 1996-2000 - Internal Front/External Rear < >> 572 - Internal <<
   
> LS Engines - Internal < >> GEN VI <<
   
> LT Engines (2016 >) - Internal < >> L18 - External <<
   
  >> 8.0L Vortec - Internal <<


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