LY6 vs LS3 Intake Manifold Performance . . . again
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Teching In
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LY6 vs LS3 Intake Manifold Performance . . . again This has probably been kicked around this site so many times that it is ancient history. I hve done a couple of searches and not really found what I am looking for, so I will open it up again and see what comes back.
I have a 6.0L LY6 that I am swapping to from a 5.7L TBI. I am considering swapping the intake manifold from the current truck unit to a sleeker LS3 intake. Aside from the aesthetics, am I gaining or loosing anything in flow and performance.
I have the clearance under the hood to run the LY6 intake. I don't like the way it looks, but I am not building a show piece. If the LY6 is going to provide better breathing characteristics, I will try to clean it up and stay with it. If performance is either better or the same, I am going to go pretty and put the LS3 on the motor.
I have a 6.0L LY6 that I am swapping to from a 5.7L TBI. I am considering swapping the intake manifold from the current truck unit to a sleeker LS3 intake. Aside from the aesthetics, am I gaining or loosing anything in flow and performance.
I have the clearance under the hood to run the LY6 intake. I don't like the way it looks, but I am not building a show piece. If the LY6 is going to provide better breathing characteristics, I will try to clean it up and stay with it. If performance is either better or the same, I am going to go pretty and put the LS3 on the motor.
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On The Tree
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I, and most others, are not concerned about 'better performance' with a car intake. We're wanting it for it's improved appearance only, and merely don't want to lose performance.
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The L92 truck intake VS. LS3 intake is a wash. They make ABOUT the same HP, TQ as each other. Within a few throughout the revs.
Richard Holder has done videos on YouTube about this very thing. If you haven’t seen them yet, check it out
I got mine car intake purely for looks alone. I’m glad I didn’t really loose anything down low torque wise
Richard Holder has done videos on YouTube about this very thing. If you haven’t seen them yet, check it out
I got mine car intake purely for looks alone. I’m glad I didn’t really loose anything down low torque wise
Last edited by Jimbo1367; Jan 5, 2021 at 02:41 AM.
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Launching!
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I kicked this around a lot. Bough an LS3 intake, would have had marginal clearance with truck(shave the top), LS3 has a larger stock injector. Going to mock up the engine in the car with truck intake and check hood clearance, making custom mounts to set the engine as low as possible in frame.
lots of ways to get a larger injector in an LY6 intake though, this thread is a good read if you need to upgrade.
https://ls1tech.com/forums/fueling-i...flow-rate.html
LY6, 30lb/hr@58psi
LS3, 42lb/hr@58psi
lots of ways to get a larger injector in an LY6 intake though, this thread is a good read if you need to upgrade.
https://ls1tech.com/forums/fueling-i...flow-rate.html
LY6, 30lb/hr@58psi
LS3, 42lb/hr@58psi
I want to see actually dyno numbers of how these are supposedly identical in performance. And I mean dyno numbers with some real RPM behind them, not this 6,200rpm nonsense. Richard Holdener is a moron. Short runners are for high RPM, long truck runners are for low end grunt.
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I want to see actually dyno numbers of how these are supposedly identical in performance. And I mean dyno numbers with some real RPM behind them, not this 6,200rpm nonsense. Richard Holdener is a moron. Short runners are for high RPM, long truck runners are for low end grunt.
As for who is the moron, it usually takes one to think he knows one and call silly names.
Richard Holdener is widely respected by many who actually know what they're talking about, as opposed to those who like to shoot their mouth off in a vain attempt to appear so.
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I want to see actually dyno numbers of how these are supposedly identical in performance. And I mean dyno numbers with some real RPM behind them, not this 6,200rpm nonsense. Richard Holdener is a moron. Short runners are for high RPM, long truck runners are for low end grunt.
It would have taken longer to find a post where you aren't so damn bitter.
P.S., the long runner gen 4 truck intake outperforms the short runner LS1/LS2/LS6 car intake up (or over) 7000 RPM on most setups.
The guys at Tick tested them against each other over 10 years ago and came up with the same results.
The guys at PCM of NC tested them together and the truck intake made more power.
Last edited by AwesomeAuto; Dec 29, 2020 at 12:21 AM.
Compared to who.... You? How many books have you written and sold? How many followers do you have on Youtube?
How does your bio stack up to his?
Richard Holdener is a technical editor with over 25 years of hands-on experience in the automotive industry. He's authored several books on performance engine building and written numerous articles for publications like Hot Rod, Car Craft, Super Chevy, Power & Performance, GM High Tech, and many others.
How does your bio stack up to his?
Richard Holdener is a technical editor with over 25 years of hands-on experience in the automotive industry. He's authored several books on performance engine building and written numerous articles for publications like Hot Rod, Car Craft, Super Chevy, Power & Performance, GM High Tech, and many others.
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I want to see actually dyno numbers of how these are supposedly identical in performance. And I mean dyno numbers with some real RPM behind them, not this 6,200rpm nonsense. Richard Holdener is a moron. Short runners are for high RPM, long truck runners are for low end grunt.
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From: Norn Iron
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