[DeTomaso] How to ID Aussie heads?? // more

B Hower b.hower3400 at yahoo.com
Thu Dec 2 11:26:36 EST 2021 

 USA 4V heads have a raised #4 at upper corners ... Aus 302C heads have no raised #  ... USA 351C 2V heads will have a raised #2 at upper corners.. See photos for location of # area and more 335 series head spec:

    On Thursday, December 2, 2021, 08:26:19 AM CST, Larry Weston <lplugw at hotmail.com> wrote:  
 
   There are also a couple of exterior differences that will allow you to
  spot Aus heads bolted to an engine.

  First, the outboard stand alone head bolt boss has a square head, all
  USA heads, 2v or 4v versions, have a round head.

  Second, all USA heads have extra material in the casting below the
  outbound rocker cover rail and corresponding extra thickness leading
  towards the ends of the intake manifold face to allow for drilling of
  the head to create the passages and ports for the air injection to exit
  through the little bumps in the exhaust ports.

  Aus heads do not have the little bumps in the exhaust ports.
  Sent from my iPhone
  On Dec 2, 2021, at 1:38 AM, Mike Drew via DeTomaso
  <[1]detomaso at server.detomasolist.com> wrote:

  Larry,
  It's super simple. Aussie heads have the quench combustion chambers
  (same as early US 4V heads) but the smaller 2V port size (same as all
  US 2V heads).
  Mike
  Sent from my iPad
  > On Dec 1, 2021, at 18:29, Larry Finch via DeTomaso
  <[2]detomaso at server.detomasolist.com> wrote:
  >
  > All,
  >
  > I currently have three pairs of iron closed-chamber cylinder heads.
  Two pairs are bare cylinder heads.  All three pairs are for sale.
  >
  > One pair is complete and freshly rebuilt with no miles, but from what
  I can tell it was not a performance rebuild.
  >
  > I was told one of the bare pairs is the desirable Australian
  closed-chamber heads.
  >
  > If that is true then one of the two versions in this photograph would
  be Australian. I see distinct differences in the spark plug areas.
  >
  > Can anyone tell from this photo, or provide other clues for me to
  check?
  >
  > Thanks in advance,
  >
  > Larry
  >
  <IMG_8378.jpg>
  >
  >
  > Sent from me using a magic, handheld electronic gizmo.
  _______________________________________________
  >
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References

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  2. mailto:detomaso at server.detomasolist.com
  3. mailto:DeTomaso at server.detomasolist.com
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-------------- next part --------------
   USA 4V heads have a raised #4 at upper corners ... Aus 302C heads have
   no raised #  ... USA 351C 2V heads will have a raised #2 at upper
   corners.. See photos for location of # area and more 335 series head
   spec:

   On Thursday, December 2, 2021, 08:26:19 AM CST, Larry Weston
   <lplugw at hotmail.com> wrote:
     There are also a couple of exterior differences that will allow you
   to
     spot Aus heads bolted to an engine.
     First, the outboard stand alone head bolt boss has a square head, all
     USA heads, 2v or 4v versions, have a round head.
     Second, all USA heads have extra material in the casting below the
     outbound rocker cover rail and corresponding extra thickness leading
     towards the ends of the intake manifold face to allow for drilling of
     the head to create the passages and ports for the air injection to
   exit
     through the little bumps in the exhaust ports.
     Aus heads do not have the little bumps in the exhaust ports.
     Sent from my iPhone
     On Dec 2, 2021, at 1:38 AM, Mike Drew via DeTomaso
     <[1][1]detomaso at server.detomasolist.com> wrote:
     Larry,
     It's super simple. Aussie heads have the quench combustion chambers
     (same as early US 4V heads) but the smaller 2V port size (same as all
     US 2V heads).
     Mike
     Sent from my iPad
     > On Dec 1, 2021, at 18:29, Larry Finch via DeTomaso
     <[2][2]detomaso at server.detomasolist.com> wrote:
     >
     > All,
     >
     > I currently have three pairs of iron closed-chamber cylinder heads.
     Two pairs are bare cylinder heads.  All three pairs are for sale.
     >
     > One pair is complete and freshly rebuilt with no miles, but from
   what
     I can tell it was not a performance rebuild.
     >
     > I was told one of the bare pairs is the desirable Australian
     closed-chamber heads.
     >
     > If that is true then one of the two versions in this photograph
   would
     be Australian. I see distinct differences in the spark plug areas.
     >
     > Can anyone tell from this photo, or provide other clues for me to
     check?
     >
     > Thanks in advance,
     >
     > Larry
     >
     <IMG_8378.jpg>
     >
     >
     > Sent from me using a magic, handheld electronic gizmo.
     _______________________________________________
     >
     >
     > Detomaso Email List is not managed by POCA
     > Posted emails must not exceed 1.5 Megabytes
     > DeTomaso mailing list
     > [3][3]DeTomaso at server.detomasolist.com
     > [4][4]http://server.detomasolist.com/mailman/listinfo/detomaso
     >
     > To manage your subscription (change email address, unsubscribe,
   etc.)
     use the links above.
     >
     > Members who post to this list grant license to the list to forward
     any message posted here to all past, current, or future members of
   the
     list. They also grant the list owner permission to maintain an
   archive
     or approve the archiving of list messages.
     _______________________________________________
     Detomaso Email List is not managed by POCA
     Posted emails must not exceed 1.5 Megabytes
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     [6][6]http://server.detomasolist.com/mailman/listinfo/detomaso
     To manage your subscription (change email address, unsubscribe, etc.)
     use the links above.
     Members who post to this list grant license to the list to forward
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     message posted here to all past, current, or future members of the
     list. They also grant the list owner permission to maintain an
   archive
     or approve the archiving of list messages.
   References
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     3. mailto:[9]DeTomaso at server.detomasolist.com
     4. [10]http://server.detomasolist.com/mailman/listinfo/detomaso
     5. mailto:[11]DeTomaso at server.detomasolist.com
     6. [12]http://server.detomasolist.com/mailman/listinfo/detomaso
   _______________________________________________
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   use the links above.
   Members who post to this list grant license to the list to forward any
   message posted here to all past, current, or future members of the
   list. They also grant the list owner permission to maintain an archive
   or approve the archiving of list messages.

References

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   2. mailto:detomaso at server.detomasolist.com
   3. mailto:DeTomaso at server.detomasolist.com
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   5. mailto:DeTomaso at server.detomasolist.com
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   7. mailto:detomaso at server.detomasolist.com
   8. mailto:detomaso at server.detomasolist.com
   9. mailto:DeTomaso at server.detomasolist.com
  10. http://server.detomasolist.com/mailman/listinfo/detomaso
  11. mailto:DeTomaso at server.detomasolist.com
  12. http://server.detomasolist.com/mailman/listinfo/detomaso
  13. mailto:DeTomaso at server.detomasolist.com
  14. http://server.detomasolist.com/mailman/listinfo/detomaso
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