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!!

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.

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.

Re: Tuned Headers
 

Best of both worlds: reproduction M/T Super Scavenger headers

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

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.

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

Re: Tuned Headers
 

Yea, like the sound of the old style 180 degree headers. Almost like a 6 cylinder.

Re: Tuned Headers
 

Thanks for all of the information. I'll let everyone know what I'm going to do. Thanks!

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 ?

Re: Tuned Headers
 

http://www.dragtimes.com/parts/Super-Sca...0368182562.html

I just did a quick search and came up with this add. I don't know the guys behind it, but it seems that are available.

Re: Tuned Headers
 

Those do look good. I found them on Ebay.

Re: Tuned Headers
 

There you go Matt!

Re: Tuned Headers
 

----When you call on these ask about header to steering box and steering shaft clearance. If there is a problem you will probably have it there. Also, now that Im thinking straight, ask about starter clearance as well. You may need to wrap the starter to keep the heat out. Nothing worse than going to a cruise and having the starter too hot to crank!!!......Bill S

Re: Tuned Headers
 

I had a set of M/T Scavengers on my '67 L-78 Chevelle all I can vouch for is when capped thru the exhaust it sounded like ping-pong balls banging around in there. Had the L-88 cam maybe that was why, but sure made a cool sound at idle. [img]<<GRAEMLIN_URL>>/3gears.gif[/img]

Dicky [img]<<GRAEMLIN_URL>>/flag.gif[/img]