LG Header Question
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LG Header Question
What is the big difference between the LG Street Series and LG Pro headers? (Hp/Tq and Powerband differences)
Does anyone have any graphs to show the comparison?
Looking to purchase one or the other as my next mod.
Does anyone have any graphs to show the comparison?
Looking to purchase one or the other as my next mod.
Burning Brakes
Joined: Aug 2011
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i just put in the LG streets
i like em on my wifes 05 auto
supper easy to install
nice added sound to the car too
in a nutshell, one is more for lower end torque use (streets) where the pros is more upper higher HP concern
at least that is my interpretation
give LG a call, they will give you the 411
i like em on my wifes 05 auto
supper easy to install
nice added sound to the car too
in a nutshell, one is more for lower end torque use (streets) where the pros is more upper higher HP concern
at least that is my interpretation
give LG a call, they will give you the 411
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Mods are:
FAST 102 LSX-R Intake Manifold, FAST Fuel Rails, BBK CAI, Katech Powder Coated Valve Covers, Katech Coil Relocation Kit, MSD Wires, American Thunder Exhaust, DMH Cutouts,
FAST 102 LSX-R Intake Manifold, FAST Fuel Rails, BBK CAI, Katech Powder Coated Valve Covers, Katech Coil Relocation Kit, MSD Wires, American Thunder Exhaust, DMH Cutouts,
Last edited by wiggins82abn; Sep 14, 2011 at 01:04 PM. Reason: Mistake
Race Director
Joined: Mar 2007
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From: Missouri City Texas
On a stock internals motor the SLIGHT difference in hp/tq that you might experience wouldn't outweight the difference. If you plan on going to a big heads/cam setup there might be a couple more horsepower to be found.
LG said before that the PROs were only worth 2-4hp more than streets above 5500rpms on a mostly stock car.
I'd stick with the street series for sure in your case.
LG said before that the PROs were only worth 2-4hp more than streets above 5500rpms on a mostly stock car.
I'd stick with the street series for sure in your case.
Former Vendor
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From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
Race Director
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From: Missouri City Texas
You guys have done back to back longtube tests before. Surely you have a basic configuration (~450rwhp) with dyno graph showing the difference between Pros and Streets?
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Former Vendor
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From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
Now if you are talking about HP....
I have Street Series packages on 500 rwhp cars, would they be better going to the larger systems, sure they would.
500 RWHP Street Series
Generally speaking 450-470 rwhp is about where I cut it off for the Street Series and you start to see a bigger difference.
If you are talking about a bolt on car, no other changes there is roughly a 4-8 rwhp difference in them and most of that is above 5000 RPM due to the merge collector on the Super Pro's.
Talking with the C6, I generally do not go 1 7/8" (Super Pro only), unless we are talking about a radical combination that is going to see a lot of high RPM use or supercharged applications.
Race Director
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From: Missouri City Texas
So do you have any before/after graphs to show the 4-8rwhp gain?
8 additional rwhp on a bolton car is a ridiculous amount. If there's any proof of this on back to back dyno's I'll be looking for a set of LG Pro's to replace my current longtubes.
Last edited by FloydSummerOf68; Sep 14, 2011 at 04:40 PM.
Former Vendor
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From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
Former Vendor
Joined: Aug 2005
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From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
...and I believe we are
So do you have any before/after graphs to show the 4-8rwhp gain?
8 additional rwhp on a bolton car is a ridiculous amount. If there's any proof of this on back to back dyno's I'll be looking for a set of LG Pro's to replace my current longtubes.
So do you have any before/after graphs to show the 4-8rwhp gain?
8 additional rwhp on a bolton car is a ridiculous amount. If there's any proof of this on back to back dyno's I'll be looking for a set of LG Pro's to replace my current longtubes.
Former Vendor
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From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
Here is your graph.....
Car tested 2006 LS2 Corvette
M6 Z51
Stock air box, stock mufflers.
LG Street Series no cat vs LG SuperPro no cat
No changes to the tune between, but these are tuned numbers.
As I said, results are going to vary. On this test it was almost 4hp difference between the two. Notice torque change as well.
Race Director
Joined: Mar 2007
Posts: 11,331
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From: Missouri City Texas
No it isn't....different question..
Here is your graph.....
Car tested 2006 LS2 Corvette
M6 Z51
Stock air box, stock mufflers.
LG Street Series no cat vs LG SuperPro no cat
No changes to the tune between, but these are tuned numbers.
As I said, results are going to vary. On this test it was almost 4hp difference between the two. Notice torque change as well.
Here is your graph.....
Car tested 2006 LS2 Corvette
M6 Z51
Stock air box, stock mufflers.
LG Street Series no cat vs LG SuperPro no cat
No changes to the tune between, but these are tuned numbers.
As I said, results are going to vary. On this test it was almost 4hp difference between the two. Notice torque change as well.
I'd still like to see a graph showing up to 8rwhp difference though.
Last edited by FloydSummerOf68; Sep 15, 2011 at 08:29 AM.
Team Owner
Joined: Nov 2006
Posts: 21,136
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From: Long Island New York
On my stock car some years ago, I went with the Pro's. I knew the car wouldnt stay stock for long. Didnt want to regret getting the headers that wont perform as well as the power got turned up.
I do however, regret not going with the 1 7/8 variety. I dont know how much hp it cost me though.
I do however, regret not going with the 1 7/8 variety. I dont know how much hp it cost me though.
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No it isn't....different question..
Here is your graph.....
Car tested 2006 LS2 Corvette
M6 Z51
Stock air box, stock mufflers.
LG Street Series no cat vs LG SuperPro no cat
No changes to the tune between, but these are tuned numbers.
As I said, results are going to vary. On this test it was almost 4hp difference between the two. Notice torque change as well.
Here is your graph.....
Car tested 2006 LS2 Corvette
M6 Z51
Stock air box, stock mufflers.
LG Street Series no cat vs LG SuperPro no cat
No changes to the tune between, but these are tuned numbers.
As I said, results are going to vary. On this test it was almost 4hp difference between the two. Notice torque change as well.
Thanks Anthony. You pretty much answered all of my question. It is much appreciated. Thanks for taking the time.
Former Vendor
Joined: Aug 2005
Posts: 16,897
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From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
On my stock car some years ago, I went with the Pro's. I knew the car wouldnt stay stock for long. Didnt want to regret getting the headers that wont perform as well as the power got turned up.
I do however, regret not going with the 1 7/8 variety. I dont know how much hp it cost me though.
I do however, regret not going with the 1 7/8 variety. I dont know how much hp it cost me though.
From testing here, even on larger cam'd cars going to the 1 7/8" on one of those cars would cost it 10-15 ft-lbs of torque then the lines will match up around 3500-3700 RPM and follow close to each other and the 1 7/8" would start to pick up a slight bit of HP above 5500 RPM but we are not talking much more than 2-4 hp at that point on a car making 470 rwhp on a LS3 car.
I'll see today if I can find the graphs of it. I didn't do them on the same day but it was the same car we did it on, and roughly 5-6 pulls between the two sets.