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Old 04-23-2011, 08:33 PM
turbojet427 turbojet427 is offline
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Default Tuned Headers

I am consider an old nostelgic pair of headers for my 427, but they are not a tuned header. Has anyone ever compared a equal length tuned header to a non-tuned long tube header? Is there really a difference in performance? Is there any effect on the engine being tuned or not? THANKS!!
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Old 04-23-2011, 09:11 PM
Salvatore Salvatore is offline
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Default Re: Tuned Headers

Put the headers on. If it is a street car/motor you will never know the difference. Most street headers were really never tuned headers for street use anyhow for the $150.00 we used to buy them for. When they are corked up you will never know. Look how "untuned" cast exhaust manifolds are! Old, vintage Day-2 headers are the most IMO. Very hard to find not all dented up or rusty.
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Old 04-23-2011, 09:31 PM
turbojet427 turbojet427 is offline
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Default Re: Tuned Headers

I'm going to run a 12:1 427, big roller, and lots of head work. I don't know if that changes your opinion at all? I guess I should of said that.
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Old 04-23-2011, 10:55 PM
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Default Re: Tuned Headers

Best of both worlds: reproduction M/T Super Scavenger headers
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Old 04-24-2011, 01:03 AM
olredalert olredalert is offline
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Default Re: Tuned Headers

-----If you wanted a set of headers that really made a difference (and that would only be at high RPM) you would have a qualified header guru make you a set of step-headers that cost a ton of green-backs. If you want the header "mistique" buy any quality set out there after getting real time info about weather they absolutely fit your application. Do your self a favor and dont trust just anybodies say-so on fitment. Make sure!!!.......Bill S
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Old 04-24-2011, 03:20 AM
Salvatore Salvatore is offline
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Default Re: Tuned Headers

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: turbojet427</div><div class="ubbcode-body">I'm going to run a 12:1 427, big roller, and lots of head work. I don't know if that changes your opinion at all? I guess I should of said that. </div></div>If you are going to do all that why bother with old Day-2 style headers? Have Stahl, Lemon, Gebler etc. make you a set. OR that kind of motor work was done in the old days also with store bought headers and the cars ran low 11's camaros, novas, chevelles etc. So, do what you want! Its not rocket science.
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Old 04-24-2011, 12:16 PM
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jannes_z-28 jannes_z-28 is offline
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Default Re: Tuned Headers

To really tune headers perfect you should run one or two tubes over to the other sides collector, all depending on firing order and crank design (90 or 180).

I think this was the major reason why they changed the firing order on ProStock engines, switching #3 and #6 to get a better exhaust flow through the headers.

Jan
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Old 04-24-2011, 03:16 PM
Salvatore Salvatore is offline
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Default Re: Tuned Headers

Yea, like the sound of the old style 180 degree headers. Almost like a 6 cylinder.
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Old 04-24-2011, 04:12 PM
turbojet427 turbojet427 is offline
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Default Re: Tuned Headers

Thanks for all of the information. I'll let everyone know what I'm going to do. Thanks!
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Old 04-26-2011, 12:48 AM
owners2 owners2 is offline
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Default Re: Tuned Headers

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: pxtx</div><div class="ubbcode-body">Best of both worlds: reproduction M/T Super Scavenger headers </div></div>Where do you find those ?
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