1. 

   1970-44637-a1 Well-Known Member

   what is the difference between the vintage b4b and the current b4b available new.

    

   1970-44637-a1, Jan 1, 2010

   #1
2. 

   intense74 Well-Known Member

   I know the current B4B manifolds are drilled and tapped for both the square bore Holly and the spread bore Quadrajet carbs.

    

   intense74, Jan 1, 2010

   #2

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