Headers sizing
Drifting
Joined: May 2015
Posts: 1,525
Likes: 391
From: Martinez CA
There's actually been some few tests here, but I didn't search for them. IIRC, 2" starting helping at a lower HP/TQ point than I would have guessed.
The tests that were done used dyno test, IIRC.
with a quick search found these
https://www.corvetteforum.com/forums...primaries.html
https://www.corvetteforum.com/forums...and-h-c-3.html
https://www.corvetteforum.com/forums...s-1-7-8-a.html
The tests that were done used dyno test, IIRC.
with a quick search found these
https://www.corvetteforum.com/forums...primaries.html
https://www.corvetteforum.com/forums...and-h-c-3.html
https://www.corvetteforum.com/forums...s-1-7-8-a.html
Last edited by Chiselchst; Aug 22, 2020 at 04:28 PM.
Thread Starter
Drifting
Joined: Aug 2017
Posts: 1,825
Likes: 333
From: Dayton, OH
Thanks for the responses.
It made 677 HP\633 TQ with 1 7/8ths headers. They are not coated and put a lot of heat into the engine compartment. I was pondering pulling them and having them coated. Then got to thinking that as long as they were off it is an opportunity to upsize to 2" at the same time if it was useful to do so.
I read the linked threads. Seems as though 2" is good, maybe a little better even for the level I am at. I am not looking to make more. (Well, I am swapping from a 3.6 to a 3.4 pulley next week. LOL) If I can find a set of 2" headers, get them coated and swap them it would be good.
It made 677 HP\633 TQ with 1 7/8ths headers. They are not coated and put a lot of heat into the engine compartment. I was pondering pulling them and having them coated. Then got to thinking that as long as they were off it is an opportunity to upsize to 2" at the same time if it was useful to do so.
I read the linked threads. Seems as though 2" is good, maybe a little better even for the level I am at. I am not looking to make more. (Well, I am swapping from a 3.6 to a 3.4 pulley next week. LOL) If I can find a set of 2" headers, get them coated and swap them it would be good.
Last edited by SteveJewels; Aug 22, 2020 at 05:41 PM.
