I purchased 1 7/8 LT's when I was doing a H/C combo on stock bottom end because I planned on doing a stroker setup with a blower at some point down the road.
I like the idea that I can use them as I climb the mod ladder. 
[Z06] which header primary size?
Thread Starter
Instructor
Joined: Apr 2008
Posts: 244
Likes: 0
From: Ottawa Ontario
which header primary size?
On a Z06 with just a Halltech venom. Which size header primaries should be used? The 1 3/4" or the 1 7/8"? I was thinking of the AR headers with the cats x-pipe. I'm going to keep the stock Ti to start with. Need cats since we have emission checking up here.
thx
thx
Race Director
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
If you are staying relatively stock then get LG Streets (3/4). If you are going stock cubes but a cam or heads/cam get the LG Pros (3/4). If you are going FI or more cubes go with AR 7/8.
Be sure you know what your end goal is or you might wind up buying two sets of headers....
Be sure you know what your end goal is or you might wind up buying two sets of headers....
Race Director
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
Burning Brakes
Joined: Jul 2000
Posts: 1,134
Likes: 1
From: Arlington Texas
Go with the 1 7/8", you will make more power over the 1 3/4" and lose nothing in the bottom. I would ask ARH about a step header, they make better power than a constant diameter header in almost every instance.
Pro
Joined: Aug 2004
Posts: 540
Likes: 1
From: Norman OK
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Safety Car
Joined: Jan 2007
Posts: 4,225
Likes: 0
From: The Great Truth: "There ain't no free lunch"
St. Jude Donor '08-'09-'10-'11
Understand H/C, etc, with 1 7/8. Thought they had to much flow for a stock system, with resulting loss of HP and torque. So his power would be way down until additional mods are performed. Right or wrong?
