[DeTomaso] Stock early exhaust headers

Sat Oct 9 04:33:59 EDT 2021

Larry,

Wow, that’s terrific. I will definitely keep that in mind!

It would be interesting to see a dyno test of the Hedmann, Mind Train, old Hall big bird, and stock crap manifolds for an apples to apples comparison…..

Mike

Sent from my iPad

> On Oct 9, 2021, at 09:30, Larry Stock <larrys at panteraparts.com> wrote:
> 
> Actually Mike, they are, built Just like our 2V headers with the same 2-1/2" 4 tube collector, our 4V headers are the same as the 2V 1-3/4" primary tube headers with a flared out and fitted with the 4V 1 piece head flange, and they don't whistle like the GTS Tri Y collectors do.
> Larry
> 
> On 10/8/21, 4:59 PM, "Mike Drew" <mikeldrew at aol.com> wrote:
> 
>    Larry,
> 
>    Hahaha! Interesting comparison. I believe Dan Jones has had really good improvements with the Hall headers vice stock manifolds. The restrictions in the tailpipes and mufflers don’t help much though. 
> 
>    I have GTS headers in my car which feature too-large primary tubes and a too-small collector.  They can certainly be improved upon but I’m satisfied with what I have and don’t want to go through the hassle and expense of changing them. But I wouldn’t buy them today.
> 
>    The 2V Hedmann headers you sell are the best bet for 2V heads IMHO, but they aren’t available for 4V port sizes, are they?
> 
>    Mike
> 
>    Sent from my iPad
> 
>> On Oct 9, 2021, at 08:11, Larry Stock <larrys at panteraparts.com> wrote:
>> 
>> Mike,
>> Please tell us How do you really feel?
>> I have GTS Tri Y collector Headers in stock
>> On a Dyno I got 2 HP above 5000 RPM with the Hall Big Bore Headers over stock stamped iron ones. 
>> The problem is the flow of the restrictive collector of the hall Big Bore Header, and probably with the stock header as well.
>> Larry
>> 
>> On 10/8/21, 3:58 PM, "DeTomaso on behalf of Mike Drew via DeTomaso" <detomaso-bounces at server.detomasolist.com on behalf of detomaso at server.detomasolist.com> wrote:
>> 
>>   Steve,
>> 
>>   Stock Pantera headers are absolute garbage. Both from a design perspective, and in terms of quality. If you try to keep a set going it will turn into grandfather’s axe where it is nothing but a collection of repair welds with no original header left! It’s silly to pay a penny for stock headers—they are used as wall art “Pantlers” in these parts, decorating either side of old cattle skulls. I’m sure if you were desperate to keep using them somebody here would give you a set for free just to be rid of them!
>> 
>>   Hall Pantera used to sell excellent aftermarket so-called “big bore” replacements for the stock headers which mate up perfectly to stock (very restrictive) tailpipes. They lost their supplier but I know Larry Stock has about a thousand used ones cluttering up his shop. I’ve brokered several private sales for $75-100 for a set but I would imagine his retail would be higher. Still, that’s the best solution if you are committed to keeping the stock junk mufflers. 
>> 
>>   Since you are racing a car that is nominally confirming to Gr3 specification, you should be using the factory Gr3 exhaust system, or as close as you can get. Hall sells a complete system consisting of Gr3 headers and less-restrictive GTS/GT5 mufflers. The actual Gr3 mufflers looked just like them but were completely gutted (empty cans). They won’t have those however. 
>> 
>>   I just looked and it appears Hall doesn’t have the GTS headers anymore. No matter as the Mind Train headers PIM sells are markedly superior, and the GTS tailpipes will bolt right up. Tech inspectors won’t be able to tell the difference between factory GTS and Mind Train, but performance will be increased enough to make it worthwhile.
>> 
>>   So, Mind Train headers and GTS mufflers are your best way forward, although that’s a $2000-plus deal when all is said and done. 
>> 
>>   Mike
>> 
>>   Sent from my iPad
>> 
>>>> On Oct 9, 2021, at 03:40, Steve Lisa <stevelisa at patentit.com> wrote:
>>> 
>>>    All, we are heading to Daytona in two weeks, and the
>>> stockA headersA that we have (stamped) have been welded on enough that
>>> they are cracking easily.A  I figure a lot of you have replaced the
>>> early stamped headers with better ones and may have some near new ones
>>> hanging around your shop.A A
>>> I found these on
>>> ebay:A A [1]https://www.ebay.com/itm/DeTomaso-Pantera-factory-headers-P
>>> -up-PanteraMiami-or-we-ship-/233960553731
>>> Do you any of you have something better and available for express
>>> shipping now?A  If not, I will go with the ones from ebay.A
>>> We are looking for a spare set to take to Daytona, so they need to
>>> arrive ASAP.A A
>>> Also, I now have pictures of the clutch blowup from Portland - - will
>>> be posting them to my "rebuild" folder share and update you with a
>>> link.A A
>>> Thanks!
>>> Regards,A
>>> Steven G. Lisa, Esq.
>>> The Law Offices of Lisa & Lesko, LLC
>>> Email: SteveLisa at PatentIt.comA
>>> Direct: 480-442-0297
>>> [2]www.PatentIt.com
>>> Scottsdale OfficeA |A P:A 480.535.6656A  |A A F:A 480.535.6628A
>>> |A A A:A 7689 East Paradise Lane, Suite 2, Scottsdale, AZ 85260
>>> 
>>> Chicago OfficeA |A P: 312.752.4357A  |A  F: 312.896.5633A  |A  A: 55 E.
>>> Monroe Street, Suite 3800, Chicago, IL 60603
>>> This email is intended only for the recipient above and may contain
>>> confidential and privileged information. If you received this email in
>>> error please destroy it and indicate such by return email to me. Thank
>>> you.
>>> 
>>> References
>>> 
>>> 1. https://www.ebay.com/itm/DeTomaso-Pantera-factory-headers-P-up-PanteraMiami-or-we-ship-/233960553731
>>> 2. http://www.patentit.com/
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