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Old Dec 10, 2006 | 11:28 AM
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Default Thorley headers

Years ago when I worked at the Dyno Shop, they used to stock/sell Doug's Headers. I know that there was a company split, and they sell Doug's brand as well as Thorley and they are different companys.

I am looking to get rid of the Hedman smog headers and put a set of real good headers on the stroker. I used the Hedmans, only because they were smog legal on the car but I'm not concerned with that any more.

Why don't I hear anyone talk about Thorleys any more? Their claim to fame was the 3/8 -or wasit 5/16 inch thick flange up at the heads, and a race-proven reputation that lasted generations.

I'm looking to get the 350-c chrome headers. Feedback on 'em?

-Paul in San Diego
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Old Dec 10, 2006 | 12:15 PM
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Paul, check this thread:

http://forums.corvetteforum.com/show....php?t=1569832

New hedman elite headers, 3/8" flanges, 14 ga tubing, ball collector flanges and coated for $265 at summit.
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Old Dec 10, 2006 | 12:40 PM
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Originally Posted by ajrothm
Paul, check this thread:

http://forums.corvetteforum.com/show....php?t=1569832

New hedman elite headers, 3/8" flanges, 14 ga tubing, ball collector flanges and coated for $265 at summit.
Thanks for the reply. My question wasn't about -other brands- of headers but rather, why folks don't seem to use or even mention Doug's headers or Thorley brand any more. I know there's LOTs of types and brands out there.

Who's using Doug's or Thorleys?
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Old Dec 10, 2006 | 01:57 PM
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Originally Posted by SanDiegoPaul
Thanks for the reply. My question wasn't about -other brands- of headers but rather, why folks don't seem to use or even mention Doug's headers or Thorley brand any more. I know there's LOTs of types and brands out there.

Who's using Doug's or Thorleys?
I do! I had them de-chromed and ceramic coated. Our engine makes great power for a mild 327 (about 300 hp and 300 ft-lb at the wheels).

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Old Dec 10, 2006 | 03:58 PM
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Doug Thorley pipes were the class of the field back in the day
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Old Dec 10, 2006 | 04:20 PM
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Originally Posted by yellow 72
Doug Thorley pipes were the class of the field back in the day
Yep! Just going back to my roots I gues ..
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Old Dec 10, 2006 | 05:42 PM
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I called Thorley about a year ago and talked to their tech line. I told them I was comparing their headers and Stans headers. The techy at Thorleys recommended I buy Stan's headers. He said for a tri y design they could not compete with them. I did and I am very happy with my decision...
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Old Dec 10, 2006 | 08:34 PM
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Originally Posted by JonnHeather
I called Thorley about a year ago and talked to their tech line. I told them I was comparing their headers and Stans headers. The techy at Thorleys recommended I buy Stan's headers. He said for a tri y design they could not compete with them. I did and I am very happy with my decision...
Why use Tri-Y headers when full length headers are all over and easily available? And who is Stans Headers?
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Old Dec 11, 2006 | 12:18 AM
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Tri Y produces more low and mid range power where most of us use the motor. How many of use really use the motor over 5 or 6k rpms where there is a benefit for long tubes? Stans is in Washington, been around forever. Even Thorley recommends their headers...
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Old Dec 11, 2006 | 08:12 AM
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I agree with Jon(nHeather) above. The Tri Y design is great for the street and normal rpm driving range. I have installed Tri Y on two cars; very satisfied. In fact, they were Doug Thorley manufactured. Never had any experience with Stan's, but all I have heard about them and their product has been positive.
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Old Dec 11, 2006 | 11:19 AM
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Originally Posted by JonnHeather
Tri Y produces more low and mid range power where most of us use the motor. How many of use really use the motor over 5 or 6k rpms where there is a benefit for long tubes? Stans is in Washington, been around forever. Even Thorley recommends their headers...
Wow I am amazed that I never heard of 'em! I have always used long tube headers - gawd since my first nice car (56 Bel Air). It would seem odd to change now!
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