LS2vsLS6
LS2vsLS6 I was looking around alot and can't quite find an answer to my question....I was wondering if anybody knows which flows better the LS6 manifold or the LS2 manifold....being as the LS2 is a 90mm similar to the fast 90mm setup but I don't think it flows as well as the FAST manifold....question has nothing to do with FAST .....which flows better LS2 or LS6....anybody??? Sorry if this is a repost I searched and searched and couldn't find me an answer ..... if this is a repose mind directine me to the right link.
One thing you must keep in mind is that these manifolds were designed for specific cubic inch motors. The LS6 for a 346 c.i. and the LS2 for a 366 c.i. On a typical LS1 motor, the LS6 will make good gains, the LS2 will also show a gain but not significantly more.
Originally Posted by 94LS1Z
I was looking around alot and can't quite find an answer to my question....I was wondering if anybody knows which flows better the LS6 manifold or the LS2 manifold....being as the LS2 is a 90mm similar to the fast 90mm setup but I don't think it flows as well as the FAST manifold....question has nothing to do with FAST .....which flows better LS2 or LS6....anybody??? Sorry if this is a repost I searched and searched and couldn't find me an answer ..... if this is a repose mind directine me to the right link.
On The Tree
Joined: Jan 2002
Posts: 107
Likes: 0
From: Round Rock, TX
You might this interesting. 
Here is one test: LS2 vs LS6 on an LS2
Here is another LS2 vs LS6 vs FAST on an LS1
Here is one test: LS2 vs LS6 on an LS2
Here is another LS2 vs LS6 vs FAST on an LS1
Launching!
Joined: May 2004
Posts: 266
Likes: 0
very intresting ...but if you wanted to truly see the differnce you would have to tune the pcm for each intake for best results. by simply bolting on one of the new intakes the test does not take in to account the change in the airflow wich inturn affects your A/F ratios. until thers a comprehensive evaluation then its hard to judge.
Originally Posted by abbaskhan
very intresting ...but if you wanted to truly see the differnce you would have to tune the pcm for each intake for best results. by simply bolting on one of the new intakes the test does not take in to account the change in the airflow wich inturn affects your A/F ratios. until thers a comprehensive evaluation then its hard to judge.
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I found out the hardest way that the LS6 is best. Tried LS2, Fast 90 and back to LS6. Without a bigish cam even the Fast 90 is a waste of money. Never heard of a happy LS2 intake user. Maybe FI?
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It is a "cheap" intake only because it is produced in larger numbers across several vehicles (vs. LS6.)
I think the real reason that is it used on the aluminum 6L engines it because it allows "improvement" that will cause people to want to trade up in a few years.
Why do you think it always takes 2-3 years before a car has a decent looking stock wheel that comes standard? If it ain't the looks that draws them in, it is the hp number in motor trend.
To answer the original question, check hotrod.com for their "LS2 dyno flog." The LS6 made more power, and the LSX a tad bit more.
BTW, I am posting under my brothers account. I (gogogadget username) have a 94 Z28 with an LS2, and the intake will be the LAST improvement that I make.
I think the real reason that is it used on the aluminum 6L engines it because it allows "improvement" that will cause people to want to trade up in a few years.
Why do you think it always takes 2-3 years before a car has a decent looking stock wheel that comes standard? If it ain't the looks that draws them in, it is the hp number in motor trend.
To answer the original question, check hotrod.com for their "LS2 dyno flog." The LS6 made more power, and the LSX a tad bit more.
BTW, I am posting under my brothers account. I (gogogadget username) have a 94 Z28 with an LS2, and the intake will be the LAST improvement that I make.
Originally Posted by zamboxl
not sure about this i have been out of the tech forums for a while but last time i checked the ls2 intake sucked, it was built to be a cheap intake that wasnt that good last i heard the ls6 intake with its smaller opening flowed better
Originally Posted by jpolser
It is a "cheap" intake only because it is produced in larger numbers across several vehicles (vs. LS6.)
I think the real reason that is it used on the aluminum 6L engines it because it allows "improvement" that will cause people to want to trade up in a few years.
Why do you think it always takes 2-3 years before a car has a decent looking stock wheel that comes standard? If it ain't the looks that draws them in, it is the hp number in motor trend.
To answer the original question, check hotrod.com for their "LS2 dyno flog." The LS6 made more power, and the LSX a tad bit more.
BTW, I am posting under my brothers account. I (gogogadget username) have a 94 Z28 with an LS2, and the intake will be the LAST improvement that I make.
I think the real reason that is it used on the aluminum 6L engines it because it allows "improvement" that will cause people to want to trade up in a few years.
Why do you think it always takes 2-3 years before a car has a decent looking stock wheel that comes standard? If it ain't the looks that draws them in, it is the hp number in motor trend.
To answer the original question, check hotrod.com for their "LS2 dyno flog." The LS6 made more power, and the LSX a tad bit more.
BTW, I am posting under my brothers account. I (gogogadget username) have a 94 Z28 with an LS2, and the intake will be the LAST improvement that I make.
I've seen some TT LS1's gain power switching from the LS6 intake manifold to the LS2. The power gain is up high. If you don't have a heads / cam combo that is going to make good power above 6,500 RPM I wouldn't bother switching to the LS2 manifold.
Mark
Mark
TECH Fanatic
Joined: Oct 2002
Posts: 1,842
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From: Dallas, North Mexico
Originally Posted by jpolser
If it ain't the looks that draws them in, it is the hp number in motor trend.
BTW, I am posting under my brothers account. I (gogogadget username)
BTW, I am posting under my brothers account. I (gogogadget username)
Originally Posted by mdhmi
I've seen some TT LS1's gain power switching from the LS6 intake manifold to the LS2. The power gain is up high. If you don't have a heads / cam combo that is going to make good power above 6,500 RPM I wouldn't bother switching to the LS2 manifold.
Mark
Mark
there was a post on here where someone ported the ls2 intake and it outflowed the FAST 90/90 setup in most area... i know ur not comparing the fast intake to the ls2 but i know there was a thread somewhere either here for ls1.com. of course the fast intake was not ported, it was more or less offered as a cheaper route than goin with the fast 90/90
Launching!
Joined: Feb 2004
Posts: 233
Likes: 1
From: STL, MO
you really need to ask which one your going to use it on, the LS1/6 or the LS2...on an LS2 I don't think the LS6 intake is an improvemant at all(not worth the time swapping) for an LS1/LS6 the LS2 intake is not designed for either of these motors so it is a no-brainer that it is not a better design.
I think NOSJohn already brought up this point and everyone else must have missed it..
I think NOSJohn already brought up this point and everyone else must have missed it..
