Best F/I Intake Manifold
Originally Posted by ty_ty13
how many pounds of boost were you running... not looking for horsepower numbers looking for intake pressure.
Both being single plain.... going from SBC experience I'd say that the Victor's effective powerband will likely shift north of the GMPP by 500-1200 RPM on both sides. Of course, this is how it works N/A, and I don't know how it coorelates to FI.
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9 Second Club
Joined: Feb 2002
Posts: 985
Likes: 7
From: Lake Orion, MI
Originally Posted by FormulaFire
Any LSX anything is amazing.. BUT in comparison.. ESPECIALLY for FI. LS2 is subpar.. Just my 2 cent. And with the Carb style intakes.. you will lose something down low.. But in the Bigger picture. Overall it comes out to be the best.. It's all in what you want.. And this guy wants max power. 9 sec runs and mucho horsepower. Not saying that it can't be done on an ls1 intake.. To each is their own
Or is it just because it's a multi-piece part that actually has smoother transitions that help elimintate some of the faulty #7 flow issues and is cheaper to make? Is it that the slight loss at the low end to the LS6 is made up for above 6,500???
I have a simple little out of the box turbo car that can be driven daily. I took the kids to school and drove to work in it 4 out of 5 days last week. It'll run 9s on pump gas and it only took a LS2 intake to do it.
I'm simply saying you can get it done either way. You can spend you're money where you like but just make sure it's the way your tuner likes to play.
Rick
Last edited by 2001-WS6; Jun 19, 2006 at 10:19 PM.
Thread Starter
Joined: May 2004
Posts: 1,658
Likes: 0
From: Phoenix, AZ
Ive been looking around and most the people making big F/I power are using either the victor jr or the gmmg manifolds. Im not saying that the Ls2 won't make big power as well but let's see some numbers those of you using it.
Originally Posted by 2001-WS6
And you're basing your "subpar" on what? Got some data?
Or is it just because it's a multi-piece part that actually has smoother transitions that help elimintate some of the faulty #7 flow issues and is cheaper to make? Is it that the slight loss at the low end to the LS6 is made up for above 6,500???
I have a simple little out of the box turbo car that can be driven daily. I took the kids to school and drove to work in it 4 out of 5 days last week. It'll run 9s on pump gas and it only took a LS2 intake to do it.
I'm simply saying you can get it done either way. You can spend you're money where you like but just make sure it's the way your tuner likes to play.
Rick
Or is it just because it's a multi-piece part that actually has smoother transitions that help elimintate some of the faulty #7 flow issues and is cheaper to make? Is it that the slight loss at the low end to the LS6 is made up for above 6,500???
I have a simple little out of the box turbo car that can be driven daily. I took the kids to school and drove to work in it 4 out of 5 days last week. It'll run 9s on pump gas and it only took a LS2 intake to do it.
I'm simply saying you can get it done either way. You can spend you're money where you like but just make sure it's the way your tuner likes to play.
Rick
I'm having no problem with an LS6 and have no plans to change it for a single plane. In a boosted car the distribution is not as big as factor as n/a or nitrous IMO. But I can tell you for a fact the n/a distribution on the GMGG isnt so great, I picked almost 70 rwhp by changing the fueling in the four inside cylinders with a gen 7 on my old solid roller car. No other changes, thats some great distribution there lol.
I would take Mike Brown's word for it also, they have been ahead of the curve on FI LSx motors for a while now.
Unless someone puts their engine on an ENGINE dyno and does a back to back comparison no one will convince me the current single planes will be better then an LS6 under 1000hp on a boosted LSx. I would be more then happy to have someone prove me wrong, at this point swapping an intake to pick up even 20rwhp would be pretty cheap
I would take Mike Brown's word for it also, they have been ahead of the curve on FI LSx motors for a while now.
Unless someone puts their engine on an ENGINE dyno and does a back to back comparison no one will convince me the current single planes will be better then an LS6 under 1000hp on a boosted LSx. I would be more then happy to have someone prove me wrong, at this point swapping an intake to pick up even 20rwhp would be pretty cheap
... i hope
Some friends of mine have done all the testing for us, and they found the LS2 is the best manifold for the price. The rails from the LS2 actually hold more fuel as well. There is a certain amount of porting you can do to the LS2 to make it shine on boost. Its not good as an N/A manifold, but just the opposite for boost.
Rick
Rick
i'm not saying the single planes are bad, just for the average build I dont think they are worth anything over an LS6/LS2 on a boosted car under 1000fwhp. Just because the GMMP distribution was bad on an N/A car doesnt mean its bad on a FI car. Two totally different things and the LS2 intake is a good example of that.
If you like one buy one, I just think cowl trimming, extra weight and cost arent justified without some better data.
If you like one buy one, I just think cowl trimming, extra weight and cost arent justified without some better data.
Originally Posted by ty_ty13
im pretty sure W2W uses the gmpp intake so that means something
actually... with the gmpp you dont have to trim, but yes im sure its a little more weight..
with the vic JR you do have to trim... i actually have the gmpp getting mocked up on my motor right now along with a Aarons elbow and holley 90mm TB
with the vic JR you do have to trim... i actually have the gmpp getting mocked up on my motor right now along with a Aarons elbow and holley 90mm TB
9 Second Club
Joined: Feb 2002
Posts: 985
Likes: 7
From: Lake Orion, MI
Originally Posted by FormulaFire
I love LS2s.. hell I have an LS2.. But here is some reading for you.. http://www.gearchatter.com/viewtopic10974.php .. I'm interested in your set up.. 9's on pump? I'm right there with ya.. Shoot me a PM and we'll chat.
What we need is a stock cube LS1, stock cube LS2 and a LSx 427 all set to pull to 7K. We'll see that as the RPMs go over 6,500 and the cubes go up that their is going to be some shuffling in the numbers.
Now who is donating the testbeds???
Rick
