4 bolt 340 block

Small Block Mopar Engine

  1. moparraceman

    moparraceman Well-Known Member

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    did mopar ever make a 4 bolt 340 block ? value ?
     
  2. jimjimjimmy

    jimjimjimmy lobsterman FABO Gold Member

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    yes and it depends which one , there's the x block and r3 blocks and maybe more could be had with 4 bolt mains , but no passenger car 340 were 4 bolt , the x and r3 are race blocks .
     
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    • RustyRatRod

      RustyRatRod Bla de blizhibliz de blatde blizi bla bla FABO Gold Member

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      I think some of the TA blocks had 4 bolt mains. @Alaskan_TA can tell you for sure.
       
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      • Go Mango

        Go Mango Never enough beer...

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        I'm pretty sure the T/A blocks just had extra webbing added so that aftermarket 4 bolt caps could be added.
        But your right, Rob, Alaskan TA is really the guy that would know.
         
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        • brian6pac

          brian6pac Well-Known Member

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          No the T/A's did not have 4 bolt mains but they did have thick webs for 4 bolt mains if you wanted to install them.
           
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          • RustyRatRod

            RustyRatRod Bla de blizhibliz de blatde blizi bla bla FABO Gold Member

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            I'm probably getting them confused with some of the letter blocks then.
             
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            • moparraceman

              moparraceman Well-Known Member

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              thanks guys
               
            • rumblefish360

              rumblefish360 So close, yet so far away FABO Gold Member

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              All stock blocks are 2 bolt mains. Except.....

              The ‘70 T/A - AAR 340 6 pack engines had the thick/filled in areas that could be drilled and tapped for a 4 bolt application.

              Not all of MP race blocks came with 4 bolt main caps.
              All of the race blocks could be tapped for 4 bolt main caps.
               
            • stixx

              stixx Well-Known Member

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              ^^^^^^^^^^^^^^^^ That should be made a sticky.
               
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