Headers with Forced Induction -- LS7
Thread Starter
Racer
Joined: May 2009
Posts: 488
Likes: 28
From: Olive Branch MS
Headers with Forced Induction -- LS7
Just wondering about whether or not to do headers when (if) I add a blower to my '10 Z06...I was told that they would/could actually LOWER psi @1psi...which would utlimatley be a good thing on the LS7. I was told that if I get a 6psi pulley and add headers then I would be pretty close to 5ish psi which would keep the power level but lower boost. Is this accurate? Or is it really neccessary...I know it would be louder but that is secondary. "lowering" actual boost would be a good thing, I guess.......Many guys are just putting a blower on the ls7 with the stock manifolds and calling it a day....
Is it worth the cost vs benefit? I have read that the stock LS7 manifolds flow well.
Thanks in advance!
Scott
Is it worth the cost vs benefit? I have read that the stock LS7 manifolds flow well.
Thanks in advance!
Scott
Last edited by scottss; Apr 12, 2011 at 04:45 PM.
Pro
Joined: Mar 2011
Posts: 637
Likes: 0
From: Miami FL
There is a cyber grey z06 that England green did same kit as mine except they also did headers and hi flow cats. We had identical baseline hp numbers and he had 5 more rwhp when done at similar boost. I don't think I would add headers to my car for 5hp. Maybe there is more to it than I'm aware.
Last edited by 4SELLL; Apr 12, 2011 at 07:50 PM.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
If you're into wringing every last pony out of it, put the lt's on. If not, enjoy a quiet smooth Z that will outrun the vast majority of anything you'll see on the road. You can always do it later. Outside of a tune adj, it won't cost any more to do it down the road a bit.
Thread Starter
Racer
Joined: May 2009
Posts: 488
Likes: 28
From: Olive Branch MS
If you're into wringing every last pony out of it, put the lt's on. If not, enjoy a quiet smooth Z that will outrun the vast majority of anything you'll see on the road. You can always do it later. Outside of a tune adj, it won't cost any more to do it down the road a bit.
Scott
Pro
Joined: Mar 2006
Posts: 711
Likes: 9
And if you buy the right header/Mid pipe you can also shave about 30 lbs off the car.And up to certain amount of power the LS7 manifolds are very efficient.
But if your looking for MORE power.... a cam will give you much more over headers as stated above.
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
Thread Starter
Racer
Joined: May 2009
Posts: 488
Likes: 28
From: Olive Branch MS
Headers wouldn't give u much HP with a S/C. *BUT* Headers will INCREASE your efficiency of your setup. So if ur making 600 rwhp wo/headers at 6 psi; u'll make say... ~600 rwhp w/headers at 5 psi. And if you buy the right header/Mid pipe you can also shave about 30 lbs off the car.
And up to certain amount of power the LS7 manifolds are very efficient.
But if your looking for MORE power.... a cam will give you much more over headers as stated above.
And if you buy the right header/Mid pipe you can also shave about 30 lbs off the car.And up to certain amount of power the LS7 manifolds are very efficient.
But if your looking for MORE power.... a cam will give you much more over headers as stated above.
Melting Slicks
Joined: Nov 2007
Posts: 2,240
Likes: 51
From: South Carolina
My car made 562 RWHP at 9 PSI with stock manifolds. My ex GF's car made 551 RWHP at 8 PSI with headers (and I believe the timing was dialed back a bit from what it could have made). blower kits were identical. You WILL see a shade less boost with the headers but it certainly won't hurt you for power.
Melting Slicks
Joined: May 2000
Posts: 2,161
Likes: 17
You will make about the same peak hp and torque figures with headers, but with a little less boost. The real advantage is all throughout the power range, where you will be picking up about 30 lbs of torque.
