Northstar System in a Gen III...what do you think?
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From: St. Cloud, MN
Car: 1984 Trans Am
Engine: LS1383 in work
Transmission: Magnum F - to be installed
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Northstar System --GM Calls it Displacement on Demand
What would you all think about this...
Doing something like the northstar system in a Gen III? I think it would have great possibilities, the nightmare of installing it and getting the ECU to work right notwithstanding. GM calls it Displacement on Demand and it's in some of the new Envoys and Yukon's.
See my thread here...
Northstar System...
If you are interested, the best way for a chevy motor, would be to grab a 5.3 out of a Caprice or Envoy that's been wrecked. You'd have to take everything in the motor though. Not sure what kind of mods you could make to it.
Doing something like the northstar system in a Gen III? I think it would have great possibilities, the nightmare of installing it and getting the ECU to work right notwithstanding. GM calls it Displacement on Demand and it's in some of the new Envoys and Yukon's.
See my thread here...
Northstar System...
If you are interested, the best way for a chevy motor, would be to grab a 5.3 out of a Caprice or Envoy that's been wrecked. You'd have to take everything in the motor though. Not sure what kind of mods you could make to it.
Last edited by Ozz1967; Apr 28, 2007 at 11:45 AM. Reason: Updating info
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From: Philly, PA
The current crop of "LS2" generation motors has a similar "displacement on demand" system in certain applications. Definitely NOT the Corvette. Trucks, a few cars like the Imp, etc. You would want a RWD application to swipe it all from for sure if you were going to drop it into a 3rd gen.
Installation would be basically the same as dropping in an LS-1, but you would CERTIANLY have to use the factory computer and probably the factory (computer controlled) transmission as well. They do funky stuff with the tranny to make things "seamless" when switching between modes and I doubt it would work without the matching tranny.
There's probably about 10 million little things that would also hold you up. For instance, all displacement on demand LS motors have throttle-by-wire systems on them. That means you'd need to install an electronic gas pedal in place of your cable operated unit. Etc, etc, etc.
Installation would be basically the same as dropping in an LS-1, but you would CERTIANLY have to use the factory computer and probably the factory (computer controlled) transmission as well. They do funky stuff with the tranny to make things "seamless" when switching between modes and I doubt it would work without the matching tranny.
There's probably about 10 million little things that would also hold you up. For instance, all displacement on demand LS motors have throttle-by-wire systems on them. That means you'd need to install an electronic gas pedal in place of your cable operated unit. Etc, etc, etc.
Thread Starter
Joined: Dec 2005
Posts: 4,795
Likes: 15
From: St. Cloud, MN
Car: 1984 Trans Am
Engine: LS1383 in work
Transmission: Magnum F - to be installed
Axle/Gears: Zexel Torsen 3.73, 28-spline mosers
You are right about the million little things to hold you up...but it would be neat to try if you had the time and the money to do it. I love the idea personally, I just don't have the time, money or car to try it with. Maybe in 10 years. 
Then again, we might all be driving battery operated toys from japan by then. 
Then again, we might all be driving battery operated toys from japan by then. 
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Car: 85' TA
Engine: 355 Carbed
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Originally Posted by Damon
The current crop of "LS2" generation motors has a similar "displacement on demand" system in certain applications. Definitely NOT the Corvette. Trucks, a few cars like the Imp, etc. You would want a RWD application to swipe it all from for sure if you were going to drop it into a 3rd gen.
Installation would be basically the same as dropping in an LS-1, but you would CERTIANLY have to use the factory computer and probably the factory (computer controlled) transmission as well. They do funky stuff with the tranny to make things "seamless" when switching between modes and I doubt it would work without the matching tranny.
There's probably about 10 million little things that would also hold you up. For instance, all displacement on demand LS motors have throttle-by-wire systems on them. That means you'd need to install an electronic gas pedal in place of your cable operated unit. Etc, etc, etc.
Installation would be basically the same as dropping in an LS-1, but you would CERTIANLY have to use the factory computer and probably the factory (computer controlled) transmission as well. They do funky stuff with the tranny to make things "seamless" when switching between modes and I doubt it would work without the matching tranny.
There's probably about 10 million little things that would also hold you up. For instance, all displacement on demand LS motors have throttle-by-wire systems on them. That means you'd need to install an electronic gas pedal in place of your cable operated unit. Etc, etc, etc.
Thread Starter
Joined: Dec 2005
Posts: 4,795
Likes: 15
From: St. Cloud, MN
Car: 1984 Trans Am
Engine: LS1383 in work
Transmission: Magnum F - to be installed
Axle/Gears: Zexel Torsen 3.73, 28-spline mosers
North Star...GM Calls it Displacement on Demand
I just want to re-bump my old thread here. Had anyone ever thought of putting one of the new LS "Displacement on Demand" motors in their third gen? I'm thinking with the way things are these days, that might not be a bad option to get. Anyway you can get 300+ HP AND 30 mpg (Based on my mother-in-laws 2007 Cadillac DTS) on the highway seems like a good deal to me.
I just wonder what type of electronic add-ons you'd need to make it work.
I just wonder what type of electronic add-ons you'd need to make it work.
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