Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C5 Tech
Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace Sponsored by
Karl Chevrolet

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 01-20-2006, 02:02 AM   #1
5.0_CJ
CF Senior Member
 
5.0_CJ's Avatar
 
Member Since: Jan 2005
Location: Arlington TX
Default LQ4 vs LS6 Intake

Yes, the 6.0L truck intake in all its ugly *** glory actually makes more power than the LS6 intake, and more torque across the entire power band.

Just a little FYI, for all those interested in doing Intake Swaps on there LS1's and LS6's. If you look at the new Chevy High Performance Magazine, it will show you that the 6.0L Truck Intakes make more Horse Power and Torque then the LS6 Intakes. It also makes more Horse Power then the F.A.S.T. intake, but it does make like 7 Less Ft. Lbs. This was tested on the Stock Cams they said, so next month they will do a test on cam swaps, and the month after that they will do a test with heads too. But it looks like if you want to pick up a quick 8 Horse Power, and 3 Ft. Lbs. switch to a 6.0L Truck Intake.

LS1 = 419.7HP@4700 / 416.0TQ@5800

LS6 = 425.5HP@4700 / 421.0TQ@5700

6.0L Truck = 427.9HP@4700 / 419.0TQ@5900

F.A.S.T. LSX = 426.2HP@4800 / 427TQ@5900

Wieand/Lingenfelter = 411.2HP@4800 / 408.6TQ@6000

These were all done on a 346 cu. in LS1. This was a Mildly modified 1998 LS1 Crate Motor P/N 25534322. The article reads and I quote "What had allready been done to this engine is inconsequential for this test session. OUr concern was, as yours should be, about the numbers each manifold generated in a controlled environment."

Hope this helps you all. I would point out that even though slightly, the 6.0L Intake has higher numbers across the whole Torque band, and the and in the graph it shows it higher then the F.A.S.T. Actually I think that there guide to the graph is backwards(LOL) So it actually shows the 6.0L has higher HP all across the board not just peak, and that it is even with the LSX until 5300 for TQ.

With all the hype I hear about the LSX it was interesting to see dyno numbers, especially for a stock intake. In defense of the Lingenfelter, it is an aluminum intake, and not the nylon composite. There bottom plate is removable for lots of porting though but it does require conventional gaskets. Something to think about..........................

They also say that the going price of the 6.0L intake from a wrecking yard is about $100, so it is about 1/4 a LS6 (roughly $390) and 1/8 the F.A.S.T. (roughly $780). So I would much rather go with a 6.0L Intake, and then spend $700 on some other go fast goodies.


So, does anyone have any experience with this intake..? I'm just having some issues with how terribly ugly they are.
5.0_CJ is offline   Reply With Quote
Old 01-20-2006, 02:13 AM   #2
mdhmi
CF Senior Member
Support Corvetteforum!
 
Member Since: Jul 2003
Location: Detroit
Send a message via AIM to mdhmi Send a message via Yahoo to mdhmi
Default

Very interesting. Keep us posted on the post cam and heads results.

Mark
mdhmi is offline   Reply With Quote
Old 01-20-2006, 05:02 AM   #3
Shane_S
CF Senior Member
 
Shane_S's Avatar
 
Member Since: Nov 2005
Location: Dallas Tx
Send a message via ICQ to Shane_S Send a message via AIM to Shane_S Send a message via MSN to Shane_S Send a message via Yahoo to Shane_S
Default

Hmmm, very interesting. But will it fit under a stock hood?

Shane
__________________
2001 Mag Red C5 Vert MN6
Shane_S is offline   Reply With Quote
Old 01-20-2006, 11:34 AM   #4
Face
CF Senior Member
 
Face's Avatar
 
Member Since: Aug 2000
Location: Suffolk, Long Island NY
Send a message via AIM to Face
Default

Quote:
Originally Posted by Shane_S
Hmmm, very interesting. But will it fit under a stock hood?

Shane

That's a very good question!
Face is offline   Reply With Quote
Old 01-20-2006, 10:12 PM   #5
Mike94ZLT1
CF Senior Member
 
Mike94ZLT1's Avatar
 
Member Since: Jun 2002
Location: In the pit, trying to love someone.
Default

No, it wont fit under a stock hood. It's huge, and you have to use all the other truck parts, like the fuel rails and the other BS that sits on top. I actually have one laying around and its a beast. I'll take some pics for you. Oh, and by the way... forget using fuel rail covers with this baby!
Mike94ZLT1 is offline   Reply With Quote
Old 01-20-2006, 10:24 PM   #6
turboc5
CF Senior Member
 
turboc5's Avatar
 
Member Since: Nov 2004
Location: Bartlett IL
Default

Will it fit under the cowl? I would guess not. Could you (Mike94ZLT1)mesure overall hight in the back? It may fit under my hood but not the cowl.
turboc5 is offline   Reply With Quote
Old 01-20-2006, 11:34 PM   #7
Shane_S
CF Senior Member
 
Shane_S's Avatar
 
Member Since: Nov 2005
Location: Dallas Tx
Send a message via ICQ to Shane_S Send a message via AIM to Shane_S Send a message via MSN to Shane_S Send a message via Yahoo to Shane_S
Default

I wouldn't mind the power gains but I dont want to spend the extra $1000+ to get a new hood.

Shane
__________________
2001 Mag Red C5 Vert MN6
Shane_S is offline   Reply With Quote
Old 01-21-2006, 12:49 AM   #8
5.0_CJ
CF Senior Member
 
5.0_CJ's Avatar
 
Member Since: Jan 2005
Location: Arlington TX
Default

I think you can shave down all the hardware to just the bare intake essentials and be just fine. The throttle body is in the right location, everything else can be cut off that intake.

alot of work, but 100 vs 800... big difference.
5.0_CJ is offline   Reply With Quote
Old 01-21-2006, 09:36 AM   #9
Face
CF Senior Member
 
Face's Avatar
 
Member Since: Aug 2000
Location: Suffolk, Long Island NY
Send a message via AIM to Face
Default

On most of those, how is the peak hp at only 4700-4800 and peak torque at 5700-6000? Sounds like something is backwards?
Face is offline   Reply With Quote
Old 01-22-2006, 02:28 AM   #10
Mike94ZLT1
CF Senior Member
 
Mike94ZLT1's Avatar
 
Member Since: Jun 2002
Location: In the pit, trying to love someone.
Default

Quote:
Originally Posted by turboc5
Could you (Mike94ZLT1)mesure overall hight in the back?
Sure, I'll be out in the garage tomorrow and I'll get some pictures and measurements. I don't think you guys really understand how big or ugly this thing really is... I don't care if its worth 10hp I wouldn't want it under my hood!
Mike94ZLT1 is offline   Reply With Quote
Old 01-24-2006, 07:54 PM   #11
turboc5
CF Senior Member
 
turboc5's Avatar
 
Member Since: Nov 2004
Location: Bartlett IL
Default

Any pix/measurements yet?
__________________
Stock BiTurbo V12(twin turbo) Runs consistent Low 12's 12.0 at 119mph best.Will run 10.90s with a reflash and a drag radial. Weighs 5000lbs and it was a lot cheaper than you think.
turboc5 is offline   Reply With Quote
Old 02-05-2006, 04:04 PM   #12
JR_VIC
Junior Member
 
Member Since: Feb 2006
Default LQ4 Intake

Very interesting. I have a 2001 2500 HD with the 6.0 LQ4 that I am acquiring parts for a mod make over (Hooker Headers, 220/224 114 lsa cam, Heads, Corsa exhaust, Outlaw intake, etc.). Most everyone I have spoke with has recommended going to the FAST 90mm intake and TB but after reviewing this information it may be best to keep what I have.

My question is that I can not find specs TB opening for the LQ4 intake. Does anybody know the diamter meaning is it 78mm opening or 85mm opening?

Does anyone have any recommendations on porting my stock LQ4 intake up to an 85mm and adding an aftermarket TB or based on my mods should I stick with the stock LQ4 intake diameter and just have the stock OEM throttle body ported? Any thoughts would be very much appreciated. I know this a truck question on the Vette forum but the other sites I have been to no one has any information at all regarding this topic.

Thanks!!!
JR_VIC is offline   Reply With Quote
Old 02-05-2006, 04:04 PM
 
Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Reload this Page LQ4 vs LS6 Intake
 
 
 
Reply

Tags
346, 408, covers, diameter, fuel, horse, intake, lingenfelter, lq4, ls1, ls6, motor, power, rail, truck


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Katech independently test BER ported LS3 intake Katech_Jason C6 Tech/Performance 58 07-14-2014 10:28 AM
Analyzing LS2 along with comparisons to LS6 & LS3 Marina Blue C6 Corvette General Discussion 12 01-18-2014 12:58 PM
Ls2 VS Ls6 intake Porting tests Robert@Advanced Dyno Northern California 33 07-25-2007 12:19 AM
LS7 engine VS the World LSs1Power C6 Z06 Discussion 116 05-23-2006 04:39 PM
2001 Z06 and Stainlessworks header install and dyno numbers. CRUZMISL C5 Tech 22 07-15-2002 05:15 PM


All times are GMT -4. The time now is 02:12 AM.


Emails & Password Backup