Header Comparisons
Thread Starter
SUBVETTE
Joined: Jul 2006
Posts: 3,841
Likes: 90
From: San Diego CA
Header Comparisons
Has anyone performed a dyno comparison of different manufacturer's long tube headers, i.e. ARH, Kooks, LG, Stainless, etc. ? I'd be interested to see the measured torque and HP differences, if any, of the various headers used on the same engine.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
This is a very touchy subject since the vendors support the site. I won't post results for this reason, however I did remove my QTP Tri-Y's last year and tried a different popular brand header. The peak power was the same. The difference was down low where I lost 35 lb-ft of torque at around 3,500 RPM. Needless to say the QTP's were immediately re-installed and I still run them. Note also that the factory manifold is a Tri-Y design. Don't think this helps you much as QTP no longer makes C5 headers. There are some other tests less controversial where 1-7/8" have replaced 1-3/4" where you should be able to find data with a search.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
There have been a few comparisons. Not too many published.
Just taking the so called "BEST" and bolting them on and expecting the same results just does not happen.
also it building an engine is a whole project, not just one part here another part there.
The real question is what do you want your car to do?
and living in CA you can forget LTs. dont pass the CALIF smog tests
Just taking the so called "BEST" and bolting them on and expecting the same results just does not happen.
also it building an engine is a whole project, not just one part here another part there.
The real question is what do you want your car to do?
and living in CA you can forget LTs. dont pass the CALIF smog tests
