Forced induction and headers
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,341
From: Gilbert AZ
Depends on what you mean by much. If you are hoping for 200rwhp, then no, they don't add that. Then again they don't add that on n/a builds. Headers are pretty much a must have on a blower car. You are forcing air in, you need to get it out. I've seen 50+ gains with adding headers on a mild blower setup. Heck, I'm hoping for 20-35rwhp gains just going from one header to a different one.
Thread Starter
Instructor
Joined: Jul 2013
Posts: 103
Likes: 15
Depends on what you mean by much. If you are hoping for 200rwhp, then no, they don't add that. Then again they don't add that on n/a builds. Headers are pretty much a must have on a blower car. You are forcing air in, you need to get it out. I've seen 50+ gains with adding headers on a mild blower setup. Heck, I'm hoping for 20-35rwhp gains just going from one header to a different one.
Melting Slicks
Joined: Apr 2007
Posts: 2,987
Likes: 16
From: Phoenix
Since they rate their stuff at the flywheel and not wheel HP, then I would guess that package is somewhere in the 550rwhp range. While not necessary for that level, they definitely would add power above what they rate that package for. I also wouldn't have them do my car since I'm a cheap bastard and I like centri blowers better.
Last edited by jon6.0; Jan 6, 2014 at 05:31 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Melting Slicks
Joined: Mar 2007
Posts: 2,391
Likes: 23
From: Santa Barbara CA
I wish I had thrown my car on the dyno with the full LS9/ZR1 exhaust setup last year before I pulled them off for a set of Pfadt headers. I'm sure there was a 30 rwhp difference, but at ~700 whp, it's kind of hard to tell from the SOP difference.
I will say that the manifold setup was less tolerant of timing and showed more knock retard during tuning. I wasn't able to run the kind of timing I could with headers. I'd suspect a stock LS3 manifold setup would be quite a bit worse, too.
I will say that the manifold setup was less tolerant of timing and showed more knock retard during tuning. I wasn't able to run the kind of timing I could with headers. I'd suspect a stock LS3 manifold setup would be quite a bit worse, too.
Melting Slicks
Joined: Oct 2007
Posts: 2,569
Likes: 170
I wish I had thrown my car on the dyno with the full LS9/ZR1 exhaust setup last year before I pulled them off for a set of Pfadt headers. I'm sure there was a 30 rwhp difference, but at ~700 whp, it's kind of hard to tell from the SOP difference. I will say that the manifold setup was less tolerant of timing and showed more knock retard during tuning. I wasn't able to run the kind of timing I could with headers. I'd suspect a stock LS3 manifold setup would be quite a bit worse, too.