( WHICH IS 80 RIGHT? )
will LS2 INTAKE FIT ls6 ?
Former Vendor
Joined: Apr 2007
Posts: 1,331
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From: Jacksonville Florida
If you have it properly ported it can flow well, but honestly the HP gain is not going to be much either way.
Thread Starter
Le Mans Master
Joined: Dec 2006
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From: Phoenix Arizona
Former Vendor
Joined: Apr 2007
Posts: 1,331
Likes: 4
From: Jacksonville Florida
Le Mans Master
Joined: Aug 2001
Posts: 8,145
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From: Bradenton FLORIDA
It is not in the runner design, which in itself is good...it is the leakage between the runners due to the "vibration weld" used in the manufacturing process that is causing the leaks. If you have a heads/cam motor then jump to a good ported FAST & add our TB to really top it off, or go with a LS6 & ported stock tb.
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Drifting
Joined: Jan 2008
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From: Akron Ohio
Hot Rod, Car Craft, GM Hi Tech Performance, or one of the popular magazines did a comparo quite awhile ago and LOST around 10 H.P. or so. To exaggerate, you COULD put a 90mm TB on 1/2 inch diameter ports, and it STILL wouldn't flow like a 50mm TB would with 1-1/2 inch ports, right? As I said, this is exaggerating, but, as posted, the LS2 manifold is a large step down compared to the LS6.
I read the same article, LS2 lost HP. I will try to find a link if you are interested.
Burning Brakes
Joined: Jan 2007
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From: Boca FL
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From: Texas Hill Country
Burning Brakes
Joined: Feb 2004
Posts: 1,231
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From: edmonton ab
Interesting. The results aren't typical of the tests I have seen. Maybe the large number of manifolds in the test led to a change over time in the dyno trends.
http://www.gearchatter.com/viewtopic10974.php
http://www.vetteweb.com/tech/vemp_06...o_testing.html
http://www.gearchatter.com/viewtopic10974.php
http://www.vetteweb.com/tech/vemp_06...o_testing.html
Race Director
Joined: Jul 2007
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From: Texas Hill Country
I don't think it matters, guys. They are very similar intakes. Basically the same but the LS2 has a larger TB opening. The LS2 has a tad longer runners as well which would normally contribute to more TQ, less HP. It also depends on what engine they are bolted to.
Mags are for ENTERTAINMENT purposes only.
Mags are for ENTERTAINMENT purposes only.
Le Mans Master
Joined: Aug 2001
Posts: 8,145
Likes: 1
From: Bradenton FLORIDA
I don't think it matters, guys. They are very similar intakes. Basically the same but the LS2 has a larger TB opening. The LS2 has a tad longer runners as well which would normally contribute to more TQ, less HP. It also depends on what engine they are bolted to.
Mags are for ENTERTAINMENT purposes only.
Mags are for ENTERTAINMENT purposes only.
And TPIS can weld a 90mm round snout onto the LS6, but when it is all added up the FAST is close to the final cost.
Thread Starter
Le Mans Master
Joined: Dec 2006
Posts: 7,251
Likes: 16
From: Phoenix Arizona
I don't think it matters, guys. They are very similar intakes. Basically the same but the LS2 has a larger TB opening. The LS2 has a tad longer runners as well which would normally contribute to more TQ, less HP. It also depends on what engine they are bolted to.
Mags are for ENTERTAINMENT purposes only.
Mags are for ENTERTAINMENT purposes only.
magazines and facts are two different things! 
Melting Slicks
Joined: Aug 2006
Posts: 2,167
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From: Powell TN
Cruise-In VIII Veteran
Think about it this way. The LS2 is basically a bored out version of an 01 Z06 engine, if I'm not mistaken.
It has the 01 Z06 cam with 243 heads, but it is 42 c.i. bigger. I guess GM didn't want it to make more power than the Z, so they had to choke it down somewhere.
It has the 01 Z06 cam with 243 heads, but it is 42 c.i. bigger. I guess GM didn't want it to make more power than the Z, so they had to choke it down somewhere.
