1. 

   Pinhead64US Well-Known Member

   I'm looking into purchasing a 430 for a future project and am wondering if aftermarket big valve heads can be used despite having a bore smaller than the 455?

    

   Pinhead64US, Nov 20, 2002

   #1
2. 

   70 gsconvt Silver Level contributor

   I have a set on my 455 block. You can grind out the combustion chambers to match the 455's bore, and give yourself a great polishing job at the same time.

    

   70 gsconvt, Nov 22, 2002

   #2

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