1. 

   wdodd New Member

   This is an old question, i'm sure. Could anyone email me or post the specs. for the 5/8 drill I need to drill out the 1/2" oil passages on my 430 engine? Thanks Wayne

    

   wdodd, May 11, 2004

   #1
2. 

   GS400s Dan

   drilling
   
   Here is an excellent article that much of the Buick community follows. http://www.buickperformance.com/oilflow.htm
   Dan

    

   GS400s, May 24, 2004

   #2

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