Who's running LGM's with 3" off road pipes on an auto?
10-27-2004, 08:24 PM
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Who's running LGM's with 3" off road pipes on an auto? Just curious to how mine is going to sound. Vettes don't have the drone like an auto F body without cats do they? Thanks.
10-30-2004, 12:57 AM
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Originally Posted by C5 Forever
Just curious to how mine is going to sound. Vettes don't have the drone like an auto F body without cats do they? Thanks.
11-01-2004, 01:31 PM
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Originally Posted by XTrooper
I can tell you one thing. Your car is going to be a good deal louder without cats no matter what setup you go with. 
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11-05-2004, 03:44 PM
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Originally Posted by grego37
3" pipe is too big unless you're pushin' 550+ HP
11-05-2004, 05:59 PM
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wrong, my friend.
I have a 500 horsepower & 500 lbs TQ stroker in a 1967 shelby clone.
I called Flowmaster a number of times and talked to many different tech people. and asked them the same question 2 1/2" or 3" They all said the same thing. "you're right at the point where you go either way, the bottom of the scale for 3" tube.
If you were to go to anything bigger than 2 1/2" it would actually hurt your performance. You'd have absolutly no bottom end performance. Get some more opinions before its too late. call flowmaster, borla,spintech whoever.
good luck.
I have a 500 horsepower & 500 lbs TQ stroker in a 1967 shelby clone.
I called Flowmaster a number of times and talked to many different tech people. and asked them the same question 2 1/2" or 3" They all said the same thing. "you're right at the point where you go either way, the bottom of the scale for 3" tube.
If you were to go to anything bigger than 2 1/2" it would actually hurt your performance. You'd have absolutly no bottom end performance. Get some more opinions before its too late. call flowmaster, borla,spintech whoever.
good luck.
11-05-2004, 06:07 PM
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Originally Posted by grego37
wrong, my friend.
I have a 500 horsepower & 500 lbs TQ stroker in a 1967 shelby clone.
I called Flowmaster a number of times and talked to many different tech people. and asked them the same question 2 1/2" or 3" They all said the same thing. "you're right at the point where you go either way, the bottom of the scale for 3" tube.
If you were to go to anything bigger than 2 1/2" it would actually hurt your performance. You'd have absolutly no bottom end performance. Get some more opinions before its too late. call flowmaster, borla,spintech whoever.
good luck.
I have a 500 horsepower & 500 lbs TQ stroker in a 1967 shelby clone.
I called Flowmaster a number of times and talked to many different tech people. and asked them the same question 2 1/2" or 3" They all said the same thing. "you're right at the point where you go either way, the bottom of the scale for 3" tube.
If you were to go to anything bigger than 2 1/2" it would actually hurt your performance. You'd have absolutly no bottom end performance. Get some more opinions before its too late. call flowmaster, borla,spintech whoever.
good luck.
11-11-2004, 10:40 AM
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Originally Posted by grego37
wrong, my friend.
I have a 500 horsepower & 500 lbs TQ stroker in a 1967 shelby clone.
I called Flowmaster a number of times and talked to many different tech people. and asked them the same question 2 1/2" or 3" They all said the same thing. "you're right at the point where you go either way, the bottom of the scale for 3" tube.
If you were to go to anything bigger than 2 1/2" it would actually hurt your performance. You'd have absolutly no bottom end performance. Get some more opinions before its too late. call flowmaster, borla,spintech whoever.
good luck.
I have a 500 horsepower & 500 lbs TQ stroker in a 1967 shelby clone.
I called Flowmaster a number of times and talked to many different tech people. and asked them the same question 2 1/2" or 3" They all said the same thing. "you're right at the point where you go either way, the bottom of the scale for 3" tube.
If you were to go to anything bigger than 2 1/2" it would actually hurt your performance. You'd have absolutly no bottom end performance. Get some more opinions before its too late. call flowmaster, borla,spintech whoever.
good luck.
11-15-2004, 04:08 PM
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Dual 2.5" pipe will support about 450 flywheel HP
Single 3" pipe is good for a tad bit less (420)
Bigger is not always better I do however think LS1's might be the exception and not the rule.
No doubt about it w/o cats the car is gonna be loud!
Brandin
04 C5
Single 3" pipe is good for a tad bit less (420)
Bigger is not always better I do however think LS1's might be the exception and not the rule.
No doubt about it w/o cats the car is gonna be loud!
Brandin
04 C5
11-15-2004, 04:13 PM
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Originally Posted by ILLEGAL
WRONG AGAIN.... i have a stock 00 SS with ONLY longtubes and true duals... 3"....and i went a 12.70 @ 110.7.... now tell me that it will hurt performance...
BTW my 00 SS went 12.60 @112+ without headers through a 3" magnaflow system.(Lid,FTRA,MAF translator,Ported TB,Magnaflow Cat-back)
Brandin
04 C5
03 SRT-4 13.89@102 (Intake/Exhaust)
00 SS 12.0@117 (TR 224 cam and Boltons)-sold
11-19-2004, 09:04 AM
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We have tested 2 1/2" against 3" systems on the C5 corvette and there is a loss with the 2 1/2"
In addition the LG Pro Long Tube headers use a race style "Merge" collector which aids scavange and again helps the power curve. You can see in the photo that we build a true "Long Tube" which in itself picks up low end torque.
I doubt that there is a more tested header around. The AFR test car had a different top brand of header on when they switched to the LG headers and picked up 10 hp and 22 ft lb torque.
We ususally see a 30+ increase on a regular C5 and 25 on a Z06.
Here is a Z06 graph with the addition of headers only. I don't think you will see any loss of low end torque.
Thanks
Lou Gigliotti
In addition the LG Pro Long Tube headers use a race style "Merge" collector which aids scavange and again helps the power curve. You can see in the photo that we build a true "Long Tube" which in itself picks up low end torque.
I doubt that there is a more tested header around. The AFR test car had a different top brand of header on when they switched to the LG headers and picked up 10 hp and 22 ft lb torque.
We ususally see a 30+ increase on a regular C5 and 25 on a Z06.
Here is a Z06 graph with the addition of headers only. I don't think you will see any loss of low end torque.
Thanks
Lou Gigliotti
11-19-2004, 09:26 AM
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Originally Posted by LG Motorsports
We have tested 2 1/2" against 3" systems on the C5 corvette and there is a loss with the 2 1/2"
In addition the LG Pro Long Tube headers use a race style "Merge" collector which aids scavange and again helps the power curve. You can see in the photo that we build a true "Long Tube" which in itself picks up low end torque.
I doubt that there is a more tested header around. The AFR test car had a different top brand of header on when they switched to the LG headers and picked up 10 hp and 22 ft lb torque.
We ususally see a 30+ increase on a regular C5 and 25 on a Z06.
Here is a Z06 graph with the addition of headers only. I don't think you will see any loss of low end torque.
Thanks
Lou Gigliotti
In addition the LG Pro Long Tube headers use a race style "Merge" collector which aids scavange and again helps the power curve. You can see in the photo that we build a true "Long Tube" which in itself picks up low end torque.
I doubt that there is a more tested header around. The AFR test car had a different top brand of header on when they switched to the LG headers and picked up 10 hp and 22 ft lb torque.
We ususally see a 30+ increase on a regular C5 and 25 on a Z06.
Here is a Z06 graph with the addition of headers only. I don't think you will see any loss of low end torque.
Thanks
Lou Gigliotti
Did you run the dual 3" X pipe from the headers to a stock Ti Cat back?
What exhaust did you run and what was the pipe diameter from the X to the back of the car?
I am trying to figure out if it is the factory direct fits or the exhaust that is restrictive.
Thanks
Brandin
04 C5
11-22-2004, 05:40 PM
#17
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I have FLP headers with ORPs + Z06 mufflers and there is NO DRONE at all. I guess the loudness depends on the muffler. Z06 ti system works great if you want to drive the car longer than an hour.
Last edited by LSK; 11-22-2004 at 05:45 PM.