[DeTomaso] Interesting Hall Pantera header oddity

Wed Feb 20 23:07:11 EST 2019

Coincidentally, I was watching the episode of "My Classic Car' on Gary Walker's Pantera and now believe we may be confusing two different brands, if Dennis Gage is to be believed there was also an outfit supplying aftermarket parts called "Hal" 😊

https://youtu.be/yPHTPskrjh<https://youtu.be/yPHTPskrjhs>

FWIW I'm pretty sure the ones I had were of the square flange design, but they were sold long ago so no way to verify.

Julian

________________________________
From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
Sent: Wednesday, February 20, 2019 7:59 PM
To: L GRAY
Cc: De Tomaso Forum
Subject: Re: [DeTomaso] Interesting Hall Pantera header oddity

Les,

Yes people have suggested that. But would those fit on a regular 351C?

Larry Stock sent me a photo of a ton of headers in a box and I thought most of not all were the round port style?

Mike

Sent from my iPad

> On Feb 20, 2019, at 19:23, L GRAY <tipo874a at msn.com> wrote:
>
> The other “odd” set is probably for a set of old SVO high port heads. That’s my best educated guess after having worked for Hall for several years.
>
> Leslie A. Gray
>
>> On Feb 20, 2019, at 6:02 PM, Himes, Terry (397C) via DeTomaso <detomaso at server.detomasolist.com> wrote:
>>
>>  I remember my Hall Big Bores having rectangular holes. I put them on in
>>  2001 and never
>>
>>  had any problems!  They sound great. I had a mild engine rebuild with
>>  nothing crazy.
>>
>>  Engine runs perfect!
>>
>>
>>
>>
>>  "A Purple Heart proves you were smart enough to hatch a plan,
>>
>>   stupid enough to try it and lucky enough to survive!"
>>
>>
>>  Terry W. Himes
>>
>>  JPL Jet Propulsion Laboratory
>>
>>  Dawn Spacecraft Team
>>
>>  Juno Systems & Software Team
>>
>>  TGO Sequence Lead
>>
>>  Phone: (818) 393-6261
>>
>>  Cell:     (818) 653-8213
>>
>>  [1]thimes at jpl.nasa.gov
>>
>>  🇺🇸
>>
>>
>>
>>  From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of
>>  Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
>>  Reply-To: Mike Drew <MikeLDrew at aol.com>
>>  Date: Wednesday, February 20, 2019 at 2:30 PM
>>  To: De Tomaso Forum <detomaso at server.detomasolist.com>
>>  Subject: [DeTomaso] Interesting Hall Pantera header oddity
>>
>>
>>  Guys,
>>  You may recall that a few weeks ago I put out a call for two pairs of
>>  used Hall Pantera headers on behalf of a pair of local owners. Two of
>>  you stepped up first and both sets have been delivered to me. They are
>>  both intended for standard 351C engines, and yet they have numerous
>>  notable differences.
>>  Last week I showed the header inlet ports in comparison to stock
>>  Pantera manifold ports. Both are perfectly round which is odd
>>  considering the cylinder head exhaust ports are rectangular:
>>
>>  cid:4804ffda-ba7f-4b95-b374-5bb141d9b93b at ad.jpl
>>
>>
>>  cid:a947d306-5e54-421d-800b-0f8f28912a33 at ad.jpl
>>
>>  What is interesting to me is that the second set of Hall headers that
>>  arrived today, which in theory are supposed to be the same, are
>>  markedly different.
>>
>>  cid:31b92da3-85c7-48b9-8d24-516f92c92a7d at ad.jpl
>>
>>  Although dimensionally they are the same, the second set has properly
>>  shaped flanges. What is most surprising is that they have 1 3/4-inch
>>  primaries and a 2 3/16-inch collector while the first ones have much
>>  larger 2-inch primaries and yet smaller 2 1/16-inch collectors.
>>  I find this odd in the extreme. I believe the vast majority of the
>>  thousands of Hall headers out there have the larger pipes and smaller
>>  collectors. Larry Stock has a whole bunch of these rattling around in
>>  his shop. Perhaps we can convince Larry to share what he can learn
>>  about the ones in his inventory?
>>  Dan Jones--considering that these are primarily being used on
>>  relatively mild engines, often through stock mufflers, which ones would
>>  you guess are superior?
>>  Mike
>>  Sent from my iPad
>>
>>  _______________________________________________
>>  Detomaso Email List is not managed by POCA
>>  Posted emails must not exceed 1.5 Megabytes
>>  DeTomaso mailing list
>>  DeTomaso at server.detomasolist.com
>>  [2]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.
>>
>> References
>>
>>  1. mailto:thimes at jpl.nasa.gov
>>  2. http://server.detomasolist.com/mailman/listinfo/detomaso
>> _______________________________________________
>>
>>
>> Detomaso Email List is not managed by POCA
>> Posted emails must not exceed 1.5 Megabytes
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>>
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>>
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-------------- next part --------------
   Coincidentally, I was watching the episode of "My Classic Car' on Gary
   Walker's Pantera and now believe we may be confusing two different
   brands, if Dennis Gage is to be believed there was also an outfit
   supplying aftermarket parts called "Hal"
   [1]https://youtu.be/yPHTPskrjh
   FWIW I'm pretty sure the ones I had were of the square flange design,
   but they were sold long ago so no way to verify.
   Julian
     __________________________________________________________________

   From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of
   Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
   Sent: Wednesday, February 20, 2019 7:59 PM
   To: L GRAY
   Cc: De Tomaso Forum
   Subject: Re: [DeTomaso] Interesting Hall Pantera header oddity

   Les,
   Yes people have suggested that. But would those fit on a regular 351C?
   Larry Stock sent me a photo of a ton of headers in a box and I thought
   most of not all were the round port style?
   Mike
   Sent from my iPad
   > On Feb 20, 2019, at 19:23, L GRAY <tipo874a at msn.com> wrote:
   >
   > The other "odd" set is probably for a set of old SVO high port heads.
   That's my best educated guess after having worked for Hall for several
   years.
   >
   > Leslie A. Gray
   >
   >> On Feb 20, 2019, at 6:02 PM, Himes, Terry (397C) via DeTomaso
   <detomaso at server.detomasolist.com> wrote:
   >>
   >>  I remember my Hall Big Bores having rectangular holes. I put them
   on in
   >>  2001 and never
   >>
   >>  had any problems!  They sound great. I had a mild engine rebuild
   with
   >>  nothing crazy.
   >>
   >>  Engine runs perfect!
   >>
   >>
   >>
   >>
   >>  "A Purple Heart proves you were smart enough to hatch a plan,
   >>
   >>   stupid enough to try it and lucky enough to survive!"
   >>
   >>
   >>  Terry W. Himes
   >>
   >>  JPL Jet Propulsion Laboratory
   >>
   >>  Dawn Spacecraft Team
   >>
   >>  Juno Systems & Software Team
   >>
   >>  TGO Sequence Lead
   >>
   >>  Phone: (818) 393-6261
   >>
   >>  Cell:     (818) 653-8213
   >>
   >>  [1]thimes at jpl.nasa.gov
   >>
   >>  🇺🇸
   >>
   >>
   >>
   >>  From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf
   of
   >>  Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
   >>  Reply-To: Mike Drew <MikeLDrew at aol.com>
   >>  Date: Wednesday, February 20, 2019 at 2:30 PM
   >>  To: De Tomaso Forum <detomaso at server.detomasolist.com>
   >>  Subject: [DeTomaso] Interesting Hall Pantera header oddity
   >>
   >>
   >>  Guys,
   >>  You may recall that a few weeks ago I put out a call for two pairs
   of
   >>  used Hall Pantera headers on behalf of a pair of local owners. Two
   of
   >>  you stepped up first and both sets have been delivered to me. They
   are
   >>  both intended for standard 351C engines, and yet they have numerous
   >>  notable differences.
   >>  Last week I showed the header inlet ports in comparison to stock
   >>  Pantera manifold ports. Both are perfectly round which is odd
   >>  considering the cylinder head exhaust ports are rectangular:
   >>
   >>  cid:4804ffda-ba7f-4b95-b374-5bb141d9b93b at ad.jpl
   >>
   >>
   >>  cid:a947d306-5e54-421d-800b-0f8f28912a33 at ad.jpl
   >>
   >>  What is interesting to me is that the second set of Hall headers
   that
   >>  arrived today, which in theory are supposed to be the same, are
   >>  markedly different.
   >>
   >>  cid:31b92da3-85c7-48b9-8d24-516f92c92a7d at ad.jpl
   >>
   >>  Although dimensionally they are the same, the second set has
   properly
   >>  shaped flanges. What is most surprising is that they have 1
   3/4-inch
   >>  primaries and a 2 3/16-inch collector while the first ones have
   much
   >>  larger 2-inch primaries and yet smaller 2 1/16-inch collectors.
   >>  I find this odd in the extreme. I believe the vast majority of the
   >>  thousands of Hall headers out there have the larger pipes and
   smaller
   >>  collectors. Larry Stock has a whole bunch of these rattling around
   in
   >>  his shop. Perhaps we can convince Larry to share what he can learn
   >>  about the ones in his inventory?
   >>  Dan Jones--considering that these are primarily being used on
   >>  relatively mild engines, often through stock mufflers, which ones
   would
   >>  you guess are superior?
   >>  Mike
   >>  Sent from my iPad
   >>
   >>  _______________________________________________
   >>  Detomaso Email List is not managed by POCA
   >>  Posted emails must not exceed 1.5 Megabytes
   >>  DeTomaso mailing list
   >>  DeTomaso at server.detomasolist.com
   >>  [2]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.
   >>
   >> References
   >>
   >>  1. [2]mailto:thimes at jpl.nasa.gov
   >>  2. [3]http://server.detomasolist.com/mailman/listinfo/detomaso
   >> _______________________________________________
   >>
   >>
   >> Detomaso Email List is not managed by POCA
   >> Posted emails must not exceed 1.5 Megabytes
   >> DeTomaso mailing list
   >> DeTomaso at server.detomasolist.com
   >> [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
   DeTomaso mailing list
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   [5]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.

References

   1. https://youtu.be/yPHTPskrjhs
   2. mailto:thimes at jpl.nasa.gov
   3. http://server.detomasolist.com/mailman/listinfo/detomaso
   4. http://server.detomasolist.com/mailman/listinfo/detomaso
   5. http://server.detomasolist.com/mailman/listinfo/detomaso