WEIAND LS1 INTAKE MAN
Jun 18, 2002 | 12:45 AM
#1
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From: NJ
WEIAND LS1 INTAKE MAN
I was looking inthe new summit catolog and came across the Weiand LS1 intake manifold for the gen 3 350. It claimed 12hp on a stock ls1 350. It also had some Lingenfelter calim on it. It also said it make a huge difference on forced air induction motors. It is $539 for the Man w/gaskets. What your opinions on this. It should bolt to the 5.3( 325) right. what , if any improvements/ problems will I run into or should I expect.
Jun 18, 2002 | 01:07 AM
#2
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From: north dallas
Re: WEIAND LS1 INTAKE MAN
i have heard good and bad about it from the ls1 guys. dont think it was all that it was made out to be. u can always be the tester though <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
oh yah, and btw, i wouldnt buy anything from a magazine that called the ls1 a 350 (its a 346ci) <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
oh yah, and btw, i wouldnt buy anything from a magazine that called the ls1 a 350 (its a 346ci) <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Jun 18, 2002 | 07:31 AM
#3
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From: Montgomery,tx
Re: WEIAND LS1 INTAKE MAN
1st off the what fits an ls1 will not fit the truck ls1. The deck high between the two motors is differnt. The ls1 camaro guys would love to have the truck intake on there ****, cause the truck intake is designed alot beter than the car. The truck intake is the ****. Just like when yrs ago we figured out the truck intake was better than the stock mustang intake.
Hyde
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Last edited by hyde; Apr 8, 2011 at 04:27 PM.
Jun 18, 2002 | 07:38 AM
#4
Re: WEIAND LS1 INTAKE MAN
The reason the F-bodies don't use the truck intake is because it is to tall to fit under the hood with out notching out the windshield and a 3" cowl hood.
Jun 18, 2002 | 07:54 AM
#5
Re: WEIAND LS1 INTAKE MAN
I would keep the truck intake on...
The Lingenfelter claim on that intake is because they helped design it. The intake is more or less just an LS6 intake in metal form with some extra think walls. I would not buy this intake unless you had some ported heads and plan to port match the intake to your setup.
The Lingenfelter claim on that intake is because they helped design it. The intake is more or less just an LS6 intake in metal form with some extra think walls. I would not buy this intake unless you had some ported heads and plan to port match the intake to your setup.
Jun 18, 2002 | 09:06 AM
#6
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From: Montgomery,tx
Re: WEIAND LS1 INTAKE MAN
Well greg that might be true but the deck heighth is differnt, and the truck intake flows alot better due to design. Air in and down the tubes to head, ls1 intake the air flows in under the runnersand has to go up and back down to the head.
Hyde
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Last edited by hyde; Apr 8, 2011 at 04:27 PM.
Jun 18, 2002 | 09:54 AM
#7
Re: WEIAND LS1 INTAKE MAN
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by hyde:
<strong>Well greg that might be true but the deck heighth is differnt, and the truck intake flows alot better due to design. Air in and down the tubes to head, ls1 intake the air flows in under the runnersand has to go up and back down to the head.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The truck and LS6 intake have very similar flows. The truck intake does outflow the LS1. The deck height may be different, I don't know. I do know of a couple of guys that have considered it and didn't go through it because of the reasons above. Someone over in the engine section had flow charts on them. I can't seem to find them right now though.
<strong>Well greg that might be true but the deck heighth is differnt, and the truck intake flows alot better due to design. Air in and down the tubes to head, ls1 intake the air flows in under the runnersand has to go up and back down to the head.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The truck and LS6 intake have very similar flows. The truck intake does outflow the LS1. The deck height may be different, I don't know. I do know of a couple of guys that have considered it and didn't go through it because of the reasons above. Someone over in the engine section had flow charts on them. I can't seem to find them right now though.
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Jun 18, 2002 | 02:19 PM
#8
Re: WEIAND LS1 INTAKE MAN
Big issue with the new Holley/Weiand LS1 intakes is quality control.
That's why you don't any dyno or track results.
They don't bolt right on, and some folks have had problems getting them to seal.
An LS1/LS6 intake will bolt to a 5.3 or a 6.0 or a 4.8, all the stuff is universal.
I have a 6.0 block with 00' ls1 heads.
That's why you don't any dyno or track results.
They don't bolt right on, and some folks have had problems getting them to seal.
An LS1/LS6 intake will bolt to a 5.3 or a 6.0 or a 4.8, all the stuff is universal.
I have a 6.0 block with 00' ls1 heads.
Jun 18, 2002 | 07:52 PM
#9
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From: houston
Re: WEIAND LS1 INTAKE MAN
PSJ is right about the fit. Let me add that the truck intake is designed for lower end torque but will out flow a stock LS1 intake. It will not out flow a LS6 intake but its not far off from it..Sorry , but don`t remember the flow numbers either.
I personally would not consider a higher flowing intake,designed for high RPM horsepower without some major mods to the motor.Forinstance, every bolt on possible, LS1 edit, high stall converter, stage two heads and healthy cam. It would be one of my last mods, because gains would be low for dollars spent and plus it is designed for higher RPM operation. Gains should even be lower on a smaller 325 (5.3) VS a 346 cid or 6.0.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I personally would not consider a higher flowing intake,designed for high RPM horsepower without some major mods to the motor.Forinstance, every bolt on possible, LS1 edit, high stall converter, stage two heads and healthy cam. It would be one of my last mods, because gains would be low for dollars spent and plus it is designed for higher RPM operation. Gains should even be lower on a smaller 325 (5.3) VS a 346 cid or 6.0.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Jun 18, 2002 | 08:18 PM
#10
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Re: WEIAND LS1 INTAKE MAN
Go to the 6th post down in this thread and look at the flow numbers for the "ported LS1** heads". They have numbers with the LS1, LS6, and truck intake attached.
https://ls1tech.com/ubb/cgi-bin/ulti...c&f=1&t=000464
It shows that the truck intake is about the same as the LS6 intake flow wise until around .500-.550 lift and then the LS6 starts to pull away. The truck intake absolutely KILLS the LS1 intake at low lift and still flows better at higher lifts. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
John
<small>[ June 18, 2002, 08:26 PM: Message edited by: XLR8NSS ]</small>
https://ls1tech.com/ubb/cgi-bin/ulti...c&f=1&t=000464
It shows that the truck intake is about the same as the LS6 intake flow wise until around .500-.550 lift and then the LS6 starts to pull away. The truck intake absolutely KILLS the LS1 intake at low lift and still flows better at higher lifts. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
John
<small>[ June 18, 2002, 08:26 PM: Message edited by: XLR8NSS ]</small>