Last spring I sprang for a relatively expensive set of 1.75" to 1.875" stepped headers, CNC flange, with a 3" merge collector containing a 2.5" reducer. Sounded like a great idea at the time but subsequent dyno testing revealed no gains at all. Was told by someone whom I consider knowledgeable to not give up on the headers as there are gains to be had, but you had to find them including changing the split on cam. Put quite a bit of effort into trying to make them work but issues keep popping up and seem to be loosing ground vs gaining.

The headers themselves were of lesser quality than the price would indicate with fit, leak and coating issues and that seems to be the main problem. Right now I've reinstalled my former Hooker Super Comps but trying to figure out if other people are not getting gains from "super duper" headers or it's the fit and finish that killed the headers.

Thinking about having a set of Burns built if others have found gains in the newer designs. I know Stahl says they are a scam so looking for feedback as to what's the real deal.

Hey……..it's only money, but I'd rather not throw it away and I've changed enough headers lately to last me a while if they don't work.

 

Saw another thread somewhere on the internet and that poster came to the same conclusion that you did. No difference in power with the high tech big dollar headers with his combinaton.

 

Boy, ain't that great. Live n learn.

 

If ya spend a LOT of dyno time with the Burns headrs and collector ya will find more HP.

 

Yeah, Denny, Did ya fool with trying to tune collector lengths?

 

There are different inserts for the Burns collector.

 

No, it's a street car and make no pretense other. However, it has an excellant dual 3" exhaust that on two occasions we compared open exhaust with closed exhaust and the car showed no preference for either.

 

My assumption is your talking other vs simple timing, fuel/air tuning. Are you talking the inserts you alude to, different collectors, etc. And, how much power are we talking about vs a regular plain ol good header? Dyno time I can do.....knowing how to tune them is another issue. It's been a real lesson so far.

 

Yes, the collectors take time to get right. I would suspect upwards of 10HP depending on what ya started with. I have never been fortunate enough to have dynoed a set.
Anderson and Lines in Pro Stock run these headers.
If ya see the results on the dyno ya will know how to work with them. It won't be an every pass deal of changing them. Your fuel and timing are subject to change also.Ya might see increases with the exhaust rocker change or different exhaust lobe. Yea they are that effecient.

 

Simple fuel/timing are a given and just picked up a wideband 02 to tweak fuel pressure for atmospheric conditions. May have to pass on changing rockers and cam lobes.

Afraid Summit declined my offer to have them sponsor me so my budget is a little tighter than Lines or Andersons. Next year??......ya never know. Kinda like those Brut girls and may have to try that direction.

 

A cam change my wake things up with the bigger headers.


David

 

Maybe, I ran the two headers though the professional version of Performance Trends software and it show my older headers being stronger on top. Hell, I dunno??? That was with about three cams: current, one in garage and an old one. Gave up at that point.

 

Some are late to the party talking 'bout cam change.
Rocker change might do the trick.

 

Doesn't sound worth the hassle AT ALL!

 

Denny,

Were you also fooling around with different intake combinations a while back. Did you get any favorable results from those tests?

Steve