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Ls3

 
Old 12-31-2018, 08:39 AM
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Grit66
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do any of the ls3 engines cut out cylinders when cursing at highway speed
I thought I saw a post some where that said they did for fuel economy
thanks
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Old 12-31-2018, 09:10 AM
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EVRose
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No.
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Old 12-31-2018, 09:16 AM
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Bruze
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I only curse when in heavy traffic, never at highway speeds.
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Old 12-31-2018, 09:29 AM
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Corvette_Ed
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You're thinking of the C7.
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Old 12-31-2018, 10:55 AM
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Shaolin Crane
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The L99/L92 and LS3 in the Camaro had this option (DOD) but never in the C6.
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Old 12-31-2018, 11:26 AM
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Grit66
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Thanks for the reply’s. I’ve never really understood that concept in a “high proformance”
car. Again tks.
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Old 12-31-2018, 12:20 PM
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Shaolin Crane
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Originally Posted by Grit66 View Post
Thanks for the reply’s. I’ve never really understood that concept in a “high proformance”
car. Again tks.
That you can have your cake and eat it too? I'll never understand why forward engine technology is looked down on.

Thanks to technology we can have high horsepower and get 30s for MPG. You'll have the chest beaters that say "oh you should have bought another car if you're worried about that, blah blah, real men do..." but I've built the huge HP engines that got 6 mpg and that **** gets old quick. This was back when 500-600hp was considered "huge" in a street car. Now that's barely competitive when a stock Mustang, Camaro or Base C7 comes off the lot with near that.

Sure I didn't buy my vette because of fuel mileage but it's also nice it gets high 20s for MPG with comfort features.
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Old 12-31-2018, 12:27 PM
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CAFE/ corporate average fuel economy regulations have forced manufacturers to get creative in making cars more fuel efficient. Cylinder deactivation is one of the engineered methods to accomplish that. My C7 Z06 has it but it's a 7 speed manual that I never drive in Eco mode, so it never rears it's ugly head.
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Old 12-31-2018, 12:28 PM
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Manufacturers did it to have a certain percentage of their cars meet the new EPA standards.
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Old 12-31-2018, 12:33 PM
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Corvette_Ed
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Originally Posted by Shaolin Crane View Post
I'll never understand why forward engine technology is looked down on..
That's probably because most of us don't see it as forward technology.
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Old 12-31-2018, 12:41 PM
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Originally Posted by Corvette_Ed View Post
That's probably because most of us don't see it as forward technology.
An all aluminum small block that makes 500hp with options for dry sump or forced induction that fits under a factory hood isn't forward technology? Or we could be short sighted about every technological advance and still be running POS big blocks for power with dogshit handling characteristics getting 3mpg struggling for 700hp.

You don't have to "see it" as advancement but it is.
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Old 12-31-2018, 12:42 PM
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Originally Posted by Shaolin Crane View Post
An all aluminum small block that makes 500hp with options for dry sump or forced induction that fits under a factory hood isn't forward technology?
Sure it is. Cylinder deactivation isn't.
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Old 12-31-2018, 02:07 PM
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1981 Cadillac 8-6-4 had it way back when ....

The V-8-6-4 engine would go down as one of Cadillac’s biggest mistakes ever ... with the 'Cimarron' following close behind.



Last edited by Turbo6TA; 12-31-2018 at 02:07 PM.
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Old 12-31-2018, 05:23 PM
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Originally Posted by Corvette_Ed View Post
Sure it is. Cylinder deactivation isn't.
How did you come to that conclusion?
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Old 12-31-2018, 07:16 PM
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I read in an ls book that the LS2 and up has the provisions for it, but it's not used.
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Old 12-31-2018, 07:19 PM
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Originally Posted by Shaolin Crane View Post
The L99/L92 and LS3 in the Camaro had this option (DOD) but never in the C6.
No AFM/DOD in LS3(in any vehicle). Camaro SS stick shift cars with LS3 do not have AFM. Fyi
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Old 12-31-2018, 07:20 PM
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Originally Posted by Shaolin Crane View Post
The L99/L92 and LS3 in the Camaro had this option (DOD) but never in the C6.
The L99 had cylinder deactivation in the Camaro but the LS3 did not. Auto trans cars got L99, M6 cars got LS3,
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Old 12-31-2018, 07:44 PM
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Thankfully no! My 13GS gets 23-25mpg around 80 mph so that is good enough for me. I also hate the darn auto stop on cars especially when you park since it starts the engine back up when you put it in park just so you can turn it off.
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