Proper Header Diameter for 440 CI
Thread Starter
Teching In
Joined: May 2005
Posts: 28
Likes: 0
From: Upper West Side, New York City/Very Downtown, Houston
Proper Header Diameter for 440 CI I have a 440 stroker w/ TFS 235 and a fats 90/90 in my 2004 zo6.
Currently it is making 550/520 through lg 1 3/4 headers and stock tis.
I am going to intsll electric cutouts, but I want to know what diameter header I should get. (2 or 1 7/8)? Also, what brand?
Thanks in advance and I know I may get a lot of differing opinions.
Currently it is making 550/520 through lg 1 3/4 headers and stock tis.
I am going to intsll electric cutouts, but I want to know what diameter header I should get. (2 or 1 7/8)? Also, what brand?
Thanks in advance and I know I may get a lot of differing opinions.
Hell I run 1 7/8 stepped to 2" on my little ol' 404. I didn't notice ANY drivability loss from my old pacesetters. Someone please educate me on how a 2" header could hurt drivability...
I would go with 2" regardless of your setup (NA, FI). Driveability will only be affected in the sense that you will lose low end, but you will gain up top. With that displacement youll have more than enough low end to even tell the difference anyway. What are your cam specs?
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
I would go with 2" regardless of your setup (NA, FI). Driveability will only be affected in the sense that you will lose low end, but you will gain up top. With that displacement youll have more than enough low end to even tell the difference anyway. What are your cam specs?
Being a kooks guy I'll add to that vote!
Closed ex-Sponsor Account
Joined: Aug 2008
Posts: 257
Likes: 0
1-7/8's unless you're looking to be over 800 to the tire no need for 2". At your current HP level I bet the 1-3/4 are'nt hurting you enough to warrent changing them. If you want call the shop and speak to Nick and go over your combo with him and any more mods you plan like forced induction and we'll point you in the right direction.
Thread Starter
Teching In
Joined: May 2005
Posts: 28
Likes: 0
From: Upper West Side, New York City/Very Downtown, Houston
Thanks to all and I will give AHR a ring.
As for differences between Kooks and AHR, do both have merge collectors? (My tuner here in Texas is a Kooks dealer so obviously he wants to sell me Kooks). I just need to know advantages/disadvantages of each and if differences are significant.
As for differences between Kooks and AHR, do both have merge collectors? (My tuner here in Texas is a Kooks dealer so obviously he wants to sell me Kooks). I just need to know advantages/disadvantages of each and if differences are significant.
