346 heads [ BigBlock] Info Needed

Big Block A body Tech

  1. 1Badcolt

    1Badcolt Well-Known Member

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    Was tearing down a motorhome 440 engine I just bought and noticed it wasn't the normal 452 heads I have found on other 3 [440 ] engines I have tore down lately . Do these heads offer any performance benefits over 452 head or are they the same maybe these were for regular fuel .
     
  2. RustyRatRod

    RustyRatRod Bla de blizhibliz de blatde blizi bla bla

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    They are good heads. Bout as good as any of the rest.
     
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    • moper

      moper FABO Gold Member FABO Gold Member

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      I like the 346s better - the intake port "seems" to be a little taller in the throat and bowl areas. I don't think there's any extra power there "as cast", but I find them easier to port to my liking because of it.
       
    • Dartnut

      Dartnut Don't hate me because i'm beautiful

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      Good core.
      I bet the engine has a windage tray, double roller timing chain, and rotaters on the valves, and possibly a forged crank. The one a friend of mine bought had all of these additions from the factory.
       
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