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LS1 manifold vs LS6 manifold....here's another thought

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Old 03-12-2006 | 11:34 PM
  #11  
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I unbolted the bkt and bolted it up higher
in different holes
to clear the heads
then got the sawzall, covered everything up and
made it my bitch

I think either way you go you'll be doing the engine a favor
by getting a better distribution of airflow

Id just hate to see more guys burn there stuff up
using a poorly designed intake

Heres a pic that bigtex posted
Its worth a thosand words IMO
Old 03-13-2006 | 12:42 AM
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Wow! I didn't know it was that bad. That looks horibal! I don't know how we make any power out of that. Kano, did you have to unbolt the power steering pump? I dont want to do that.
Old 03-13-2006 | 01:12 AM
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Originally Posted by TURBO8
Wow! I didn't know it was that bad. That looks horibal! I don't know how we make any power out of that. Kano, did you have to unbolt the power steering pump? I dont want to do that.
what is so "horibal" about that?
Old 03-13-2006 | 06:03 AM
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Originally Posted by treyZ28
what is so "horibal" about that?
The whole freakin top has been cut off.
Old 03-13-2006 | 05:41 PM
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At least with the truck intake, you wont have the lean cylinder #7 and #8 problem like some do with the LS1/6 intakes that supply all the air from the very front of the intake.
With the truck intake the air is supplied pretty much from the middle of the manifold to all the cylinders.

I have seen too many truck intakes out flow the LS1 intake to advise the LS1 swap.

peace
Hog
Old 03-13-2006 | 06:29 PM
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Originally Posted by TURBO8
Wow! I didn't know it was that bad. That looks horibal! I don't know how we make any power out of that. Kano, did you have to unbolt the power steering pump? I dont want to do that.


nope
I just made sure I had everything covered well in the engine bay
Old 03-13-2006 | 07:59 PM
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So would this be a good mod for FI guys? If it flows better that would mean less turbulance and more power through out the midrange wouldnt it?
Old 03-13-2006 | 10:38 PM
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I think so! I plan on trying the ls1 swap. I have dyno numbers for now and I will post the new numbers after the swap. Lets see if it helps us FI guys. I am hoping that it will bring my peak HP and Torque numbers closer together atleast. I will see, I am just waiting for the parts to come in.
Old 03-14-2006 | 12:00 AM
  #19  
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Default LQ 4 vs. LS6 vs. LS1

I saw this on the vette site and thought it was interesting:

" 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."

There is alot of good information floating around but I still can't decide if the LS1 swap from my current LQ4 is worth it unless you are turning above 6K.

Any thoughts?
Old 03-14-2006 | 12:15 AM
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how is it 427hp on a mildly modified engine? wtf is "mild" on it?


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