oldsobsolete Posted January 23, 2010 Share Posted January 23, 2010 Can anyone identify this exhaust manifold or direct me to an internet site that lists casting numbers? I picked this up years ago in a large lot of General Motors NOS. Looks like an 8cyl to me and has a casting number on the back side of the manifold 505512Any help will be greatly appreciatedRegardsoldsobsolete Link to comment Share on other sites More sharing options...
Larry Schramm Posted January 23, 2010 Share Posted January 23, 2010 How about a 41-52 Pontiac? Here is link to the same casting41 42 46 47 48 49 50 51 52 Pontiac Exhaust Manifold NOS on eBay.ca (item 260509656328 end time 29-Nov-09 20:29:09 EST) Link to comment Share on other sites More sharing options...
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