Check out the pic of these 350EVO long tube headers (scroll down in thread):

https://my350z.com/forum/showthread....312#post913312

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Jeff

 

They look good. I wonder what their target price is?

 

That is just the first prototype set.
They will be priced accordingly to the products performance and value. We have two designs that we will be testing.......the first of which will undergo testing over the next week or so on the engine dyno.
We have had very good success with the crawfords but are looking for every little bit. We have decided to see what we can come up with. The project has just gotten underway. Needless to say our engine program with the race team is progressing nicely.

 

any chance these will be rasp free while using the test pipes? And will they be located where they can easily be swapped with the high flow cats?

 

stay tuned..................

 

The word in the rumor mill is that these race headers may be fitted with a flange for use of either test pipes or a hi-flow cat. This means the best of both worlds for those of us who have to pass emissions...

 

U R Correct sir!


BJ@350EVO.com

 

Hm so do you think these will produce better gains than the crawford units?

 

Nice headers, they do look different than any on the market. Can't wait for numbers on them......

 

whats the difference between shortty headers and long headers?

 

Its all about primary lengths (how long each tube is from coming off the head to the collector), tube diameter and the merge collector design. These things are all effected by other paramieters that have been modified with the engine. One type of header design might not be idealfor a stock engine with OEM cams....while it may make a huge differnece on a modified engine.
The Crawford headers are a very good design and we have had great luck with them. We are just trying to explore all areas to get whatever possible gains we can. The other area we are looking at is reducing under hood temps by not having the headers all tangled in the engine bay.
We see what we can come up with.

 

hmmm, interesting. So these will be good for a cam'd setup? I like your temp statement.
Approx cost??

 

Cam'd...yes