Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Mustang Forums
2011-2014 Mustangs
2011-2014 Mustang Talk
Kooks 1 5/8 headers before and after
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="sur_real1" data-source="post: 15628126" data-attributes="member: 42850"><p>Was it re-tuned with the new headers? Does the hp run out longer up top or does it fall off at the same spot before the headers? I know that there is a lot of discussion back and forth on the 1 5/8" as being enough for these motors, but these heads, even in stock form for its displacement, flow enough air that 1 5/8" seems a bit small. Of course, this is just an opinion based on as much research I can get my hands on. </p><p></p><p>Of note, I ran 1 5/8" on my N/A 99 Cobra 4.6 valve, and they seemed perfect. But of course that was a 281 with much lower flowing heads and no ti-vct. </p><p></p><p>Can you post the before and after dyno numbers? Maybe it is just a fluke, as long as the car is running right and not having any issues.</p></blockquote><p></p>
[QUOTE="sur_real1, post: 15628126, member: 42850"] Was it re-tuned with the new headers? Does the hp run out longer up top or does it fall off at the same spot before the headers? I know that there is a lot of discussion back and forth on the 1 5/8" as being enough for these motors, but these heads, even in stock form for its displacement, flow enough air that 1 5/8" seems a bit small. Of course, this is just an opinion based on as much research I can get my hands on. Of note, I ran 1 5/8" on my N/A 99 Cobra 4.6 valve, and they seemed perfect. But of course that was a 281 with much lower flowing heads and no ti-vct. Can you post the before and after dyno numbers? Maybe it is just a fluke, as long as the car is running right and not having any issues. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Mustang Forums
2011-2014 Mustangs
2011-2014 Mustang Talk
Kooks 1 5/8 headers before and after
Top