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dumb question?

This is a discussion on dumb question? within the Firebird / WS6 forums, part of the Vehicle Specific category; anyone know why gm changed from the ls1 - ls7 series to the lt1 series motor?...

  1. 01-14-2018, 06:39 AM #1
    fws98ws6tt
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    Question dumb question?

    anyone know why gm changed from the ls1 - ls7 series to the lt1 series motor?
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  2. 01-14-2018, 12:40 PM #2
    SMWS6TA
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    dumb question?

    improvements on architecture design and direct port injection.

    It's not the 90's LT for sure.
    http://www.ls1.com/forums/f7/my-6-liter-build-174257/

    http://www.ls1.com/forums/f8/my-8-8-rear-build-165553/

    6.0L Block - Forged 403 built, breaking it in , Polluter Stg3 Cam, FAST 102mm Intake, NW102 TB, MSD wires, NGK TR6 plugs, Truck Coil Packs, LS3 Fuel Injectors, CC Pacesetter LT Headers, TS&P ORY, QTP e-Cutout, Magnaflow Muffler, 104mm Air Lid & Line Lock, Catch Can, Stage 2 T56 w/Viper shaft, PRO 5.0 Shifter, Tick MC, SPEC Stg3+ Clutch, QT SFI BH, MWC DSL, UMI: Sway Bars, SFC, PHB, LCA's, LCA Relocation Brackets & TA, Belstein Shocks, Hotchkis Springs (1" Drop), YR1 Snowflake Wheels wrapped in NT555 tires & Custom Fab Ford 8.8 rear w/4.10 Yukon Gears, WSQ Hood, 3"CM Strange Eng Drive Shaft.

    00 FB Vert - Stock

    Horsepower never lies, but is often lied about!
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  3. 01-14-2018, 06:38 PM #3
    ShadeTreee
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    I work in the diesel industry and the real driving force is the EPA (please don't ban me for foul language).

    When it comes down to it there is no reason to do great big changes unless there is legislation behind it. A good block will give a company options for years but emissions and maintaining performance are the real engineering challenges
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  4. 01-14-2018, 10:20 PM #4
    SMWS6TA
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    dumb question?

    Also the modern LS was released in 97. But was long tested before that. It was a good run. It still is the go to for just about any build and it has replaced the SBC 350.
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  5. 01-16-2018, 01:49 AM #5
    pajeff02
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    Emissions, fuel economy and packaging are the driving forces of engine design. Then they have to take into account production costs -- materials and labor.
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