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Thread: LF3TECH.com forum unearthed in archeological dig

  1. #1
    Junior Member
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    Dec 2015
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    Cherry Valley, IL
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    LF3TECH.com forum unearthed in archeological dig

    Am guessing the LF3 is a pretty rare bird, already replaced by the LF4. Given the short lifespan for the LF3, wonder how many vehicles were ever produced with the engine (especially interested in any stats on XTS Vsport production, 2014, 15, etc.). Although they might still be assembling '16 XTS's with the LF3. Looks also like I might be the first person to walk into this ghost town in months. Just testing to see if this site is even alive, posted a couple of replies that vanished.
    WSlindee
    '14 XTS Vsport Premium - LF3 3.6L TT SIDI DIHC V6 VVT - Silver Coast Metallic - Build date: 9/12/13, Oshawa, ONT
    (wife's 365'r: '14 CR-V EX-L AWD)

  2. #2
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    yes, the LF series is almost a dinosaur, just like this forum site. Already onto the LG series as of spring 2016. Goodbye cruel modern world, I've gone to put some 93 octane into my LF3 beastie!
    WSlindee
    '14 XTS Vsport Premium - LF3 3.6L TT SIDI DIHC V6 VVT - Silver Coast Metallic - Build date: 9/12/13, Oshawa, ONT
    (wife's 365'r: '14 CR-V EX-L AWD)

  3. #3
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    Cherry Valley, IL
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    "LF" series bow to "LG" series, data below as per: https://en.wikipedia.org/wiki/GM_High_Feature_engine

    Fourth Generation[18][edit]
    Starting with 2016 Cadillac Models a new generation of High Feature V6s were developed. These new engines have redesigned block architectures with bore centers increased from 103 mm (4.055 in) on prior HFV6 engines to 106 mm (4.173 in) and a redesigned cooling system to target the hottest areas while also facilitating faster warm-up. They also incorporate engine start-stop technology, cylinder-deactivation, 2-stage oil pumps, and updated variable valve timing featuring intermediate park technology for late-intake valve closure. Both engines will debut in the 2016 Cadillac CT6.[19]
    3.0L
    LGW
    Bore and stroke of 86 mm (3.386 in) and 85.8 mm (3.378 in) are used, along with a 9.8:1 compression ratio and twin turbos with titanium-aluminide turbine wheels. Maximum engine speed is 6500 RPM. Premium unleaded fuel is required.
    Applications:
    2016 Cadillac CT6 404 hp (301 kW) @ 5700 RPM 430 lbft (583 Nm) @ 3500-4500 RPM

    3.6 L
    LGX
    Along with the increased bore spacing, the new 3.6 L V6 has larger bores than before, growing from 94 mm (3.701 in) to 95 mm (3.740 in) with the same 85.8 mm (3.378 in) stroke as the 3.0L LGW, for a displacement of 3649 cc. Intake and exhaust valves are also increased in size along with other changes to the cylinder head.[20] Compression ratio is 11.5:1 and maximum engine speed is 7200 PRM.
    Applications:
    2016 Cadillac ATS 335 hp (250 kW) @ 6800 RPM 285 lbft (386 Nm) @ 5300 RPM 2016 link
    2016 Cadillac CT6 335 hp (250 kW) @ 6800 RPM 285 lbft (386 Nm) @ 5300 RPM 2016 link
    2016 Cadillac CTS 335 hp (250 kW) @ 6800 RPM 285 lbft (386 Nm) @ 5300 RPM 2016 link
    2016 Chevrolet Camaro 335 hp (250 kW) @ 6800 RPM 284 lbft (385 Nm) @ 5300 RPM 2016 link
    2017 Buick Lacrosse 305 hp (227 kW) @ 6800 RPM 268 lbft (363 Nm) @ 5200 RPM
    2017 Cadillac XT5 310 hp (230 kW) (est.) 270 lbft (366 Nm) (est.)
    2017 GMC Acadia 310 hp (230 kW) @ 6600 RPM (est.) 271 lbft (367 Nm) @ 5000 RPM (est.)
    WSlindee
    '14 XTS Vsport Premium - LF3 3.6L TT SIDI DIHC V6 VVT - Silver Coast Metallic - Build date: 9/12/13, Oshawa, ONT
    (wife's 365'r: '14 CR-V EX-L AWD)

  4. #4
    Junior Member
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    Cherry Valley, IL
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    WSlindee
    '14 XTS Vsport Premium - LF3 3.6L TT SIDI DIHC V6 VVT - Silver Coast Metallic - Build date: 9/12/13, Oshawa, ONT
    (wife's 365'r: '14 CR-V EX-L AWD)

  5. #5
    Administrator
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    Sep 2011
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    Royal Palm Beach, Florida
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    Indeed it was short lived... Perhaps I should change the name of this site to lf4tech.com...As a matter of fact... http://www.lf4tech.com
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