Need Header Advice...
Thread Starter
Instructor
Joined: Feb 2014
Posts: 235
Likes: 28
Need Header Advice...
Ok guys I need some advise from those more knowledgeable than myself about this.
And yes I searched but didn't really have my question definitively answered.
So that leaves me needing some opinions.
In about two weeks my C7 is getting an ECS supercharger installed and tuned by Ragin Racin in Lafayette LA.
That being said I would like a set of headers and figure I might as well have em installed that way it only needs to be tuned one time.
I am looking at American Racing Headers but am undecided on whether I should get the longtubes with catted X-pipe or just save $1k and buy the shorty's...? Is there really going to be a substantial difference between the two setups?
Any advice?
Thanks in advance
And yes I searched but didn't really have my question definitively answered.
So that leaves me needing some opinions.
In about two weeks my C7 is getting an ECS supercharger installed and tuned by Ragin Racin in Lafayette LA.
That being said I would like a set of headers and figure I might as well have em installed that way it only needs to be tuned one time.
I am looking at American Racing Headers but am undecided on whether I should get the longtubes with catted X-pipe or just save $1k and buy the shorty's...? Is there really going to be a substantial difference between the two setups?
Any advice?
Thanks in advance
Safety Car
Joined: Jan 2006
Posts: 3,718
Likes: 37
From: NOLA
Well first, based on what you have given us, I would say that since Randy will be building it to your end requirements, I'd defer to him.
I would think his answer would be, Long Tube 1 7/8
$.02 submitted
I would think his answer would be, Long Tube 1 7/8
$.02 submitted
Thread Starter
Instructor
Joined: Feb 2014
Posts: 235
Likes: 28
Ok wow thanks for the fast replies guys!
I was leaning toward the longtubes but I couldn't help but ponder the $1000 price savings... I guess go big or go home!
I guess I shoulda thought about just asking Randy in the first place *duh
I was leaning toward the longtubes but I couldn't help but ponder the $1000 price savings... I guess go big or go home!
I guess I shoulda thought about just asking Randy in the first place *duh
Pro
Joined: Oct 2008
Posts: 606
Likes: 7
From: Nashville, TN
Here are a couple of dyno graphs to compare that may help:
http://forums.corvetteforum.com/c7-t...rformance.html
http://forums.corvetteforum.com/c7-t...rformance.html
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,339
From: Gilbert AZ
No, not at all. Headers will add power, allow you to run less timing/boost to make the same power, so you can make a safer 600rwhp even if you are fuel pump limited. I've seen cars with restrictive exhaust system want to ping very easy because they can't get all the spent exhaust out, so you get an EGR effect going on, and all sorts of nasty stuff.
Thread Starter
Instructor
Joined: Feb 2014
Posts: 235
Likes: 28
Thanks for the continued information guys!
I'm am pretty sure I'm going with ARH long tubes, I figure at the minimum it will sound nice and at best it will breath a little easier (more air in more air out logic)
I was just unsure if Long tubes offered some profound difference over the simpler shorty's.
I'm am pretty sure I'm going with ARH long tubes, I figure at the minimum it will sound nice and at best it will breath a little easier (more air in more air out logic)
I was just unsure if Long tubes offered some profound difference over the simpler shorty's.
Pro
Joined: Oct 2008
Posts: 606
Likes: 7
From: Nashville, TN
No, not at all. Headers will add power, allow you to run less timing/boost to make the same power, so you can make a safer 600rwhp even if you are fuel pump limited. I've seen cars with restrictive exhaust system want to ping very easy because they can't get all the spent exhaust out, so you get an EGR effect going on, and all sorts of nasty stuff.
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Thread Starter
Instructor
Joined: Feb 2014
Posts: 235
Likes: 28
I agree with everything you said, but you are speaking hypothetically about restrictive exhaust systems. The factory C7 exhaust flows EXTREMELY well though, so there really is nothing to gain HP wise with headers on a supercharged C7.
Procharger, the only company with nothing to gain/lose said they didn't see power. you can point to other vendors, but they all make money installing headers so that means nothing to me.
I'll trust a source like procharger any day over a shop who makes money installing headers. Procharger says that there is nothing to gain HP wise by adding headers. I believe them because they are one of the most trusted names in supercharging, and have nothing to gain/lose by being honest.
I still say to add headers, but make your decision based on sound. The power will be the same (and plenty safe) for all of the supercharged c7's with stock fuel systems.
Procharger, the only company with nothing to gain/lose said they didn't see power. you can point to other vendors, but they all make money installing headers so that means nothing to me.
I'll trust a source like procharger any day over a shop who makes money installing headers. Procharger says that there is nothing to gain HP wise by adding headers. I believe them because they are one of the most trusted names in supercharging, and have nothing to gain/lose by being honest.
I still say to add headers, but make your decision based on sound. The power will be the same (and plenty safe) for all of the supercharged c7's with stock fuel systems.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,339
From: Gilbert AZ
I agree with everything you said, but you are speaking hypothetically about restrictive exhaust systems. The factory C7 exhaust flows EXTREMELY well though, so there really is nothing to gain HP wise with headers on a supercharged C7.
Procharger, the only company with nothing to gain/lose said they didn't see power. you can point to other vendors, but they all make money installing headers so that means nothing to me.
I'll trust a source like procharger any day over a shop who makes money installing headers. Procharger says that there is nothing to gain HP wise by adding headers. I believe them because they are one of the most trusted names in supercharging, and have nothing to gain/lose by being honest.
I still say to add headers, but make your decision based on sound. The power will be the same (and plenty safe) for all of the supercharged c7's with stock fuel systems.
Procharger, the only company with nothing to gain/lose said they didn't see power. you can point to other vendors, but they all make money installing headers so that means nothing to me.
I'll trust a source like procharger any day over a shop who makes money installing headers. Procharger says that there is nothing to gain HP wise by adding headers. I believe them because they are one of the most trusted names in supercharging, and have nothing to gain/lose by being honest.
I still say to add headers, but make your decision based on sound. The power will be the same (and plenty safe) for all of the supercharged c7's with stock fuel systems.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
I'll weigh in with the third party candidate here instead of tackling a head-on argument.
I believe the largest advantage to LT headers on FI currently is an increase in flow resulting in a more efficient boost pressure curve. That's just my observation from gathering notes between all of the manufacturers and vendors at the moment.
The sound difference is honestly why I paid the money - I know that's silly to some, but it's just something I couldn't live without (just like checking another box on the order sheet).
I believe the largest advantage to LT headers on FI currently is an increase in flow resulting in a more efficient boost pressure curve. That's just my observation from gathering notes between all of the manufacturers and vendors at the moment.
The sound difference is honestly why I paid the money - I know that's silly to some, but it's just something I couldn't live without (just like checking another box on the order sheet).
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,339
From: Gilbert AZ
Until we see some real results no one can say when the stock manifolds see to be restrictive. I had seen people gain a few moneys but boost drop 2-3psi on a blower car, then when they set the boost back to where it was before gain 40-60rwhp from headers so it also depends on what you are doing. 7psi with stock manifolds and 7psi with headers, or 7psi with stock and 5psi with headers... Then again that is just going back to c5/c6 since we don't know how restrictive the c7 manifolds are. People said the same thing on ls7 manifolds but they pick up a ton of power with a good header.