Cadillac 4.6L LH2 Northstar Street Rod Crate Engine
Cadillac 4.6L LH2 Northstar Street Rod Crate Engine
Speedway Motors

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#91599282

Cadillac 4.6L LH2 Northstar Street Rod Crate Engine

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Product Summary

4.6 liters Engine Displacement

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    Details

    This Northstar engine was designed originally for transverse front-wheel drive applications. It was modified substantially in 2004 for longitudinal rear- and all-wheel drive use in the STS, SRX, and XLR, as well as receiving continuously variable valve timing on both intake and exhaust sides. The RWD (LH2) Northstar produces 320 hp (239 kW) and 315 lb•ft (427 N•m). An increased compression ratio of 10.5:1 enables most of the increase in power from the L37 and LD8 Northstars.

    This engine is being offered to be installed in a street rod or 'non' Cadillac application.  Speedway Motors makes no guarantee of fit or application if it is intended to be installed into an o/e make/model Cadillac application.

    2004–2009    Cadillac XLR
    320 hp (239 kW) @ 6400 rpm    310 lb•ft (420 N•m) @ 4400 rpm

    Application

    • Street rod or 'non' Cadillac application
    • Production 2006 Cadillac XLR  RWD  LH2  4.6 VIN Code Y  V-8 
    • Broadcast Code JBA
    • 12577431  Production #
    • 89017549 replaced by 19178925  Goodwrench #  2004 - 2009
    • Speedway Motors makes not guarantee of fit or application if it is intended to be installed into an o/e make/model Cadillac application

     

    Questions & Answers

    24 Questions • 11 Answers

    Can this engine be mated to a Viper transmission?

    by DIY Fool

    • 10 years ago

    1 answer

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    Will engine fit and operate in my 2001 cadillac dts?

    by Wayland

    • 10 years ago

    1 answer

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    hello, does the engine come with an electronic control unit, alternator, power steering pump air conditioning, and or any of the brackets? Just need an idea of how many extra pieces would be needed to make it operational. Thank you

    by none

    • 10 years ago

    1 answer

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    Can this be used a th 350 transmission

    by Tony

    • 10 years ago

    1 answer

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    Is there a stand along ECM hardness available for this engine

    by C6LEE

    • 11 years ago

    1 answer

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    Do you offer an ECM harness?

    by C6

    • 11 years ago

    1 answer

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    Will this engine fit in my 2006 dts performance currently with an L37,without any modification?

    by duane anthony

    • 11 years ago

    1 answer

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    This has been vaguely addressed in other answers, so I apologize if you feel that this is a repeat. Any information on motor mounts or mounting options in a hot rod? I have a 1961 Impala I am considering this engine for. Are the mounting points in the same place as other GM motors? Like the LQ9's or LS motors? Or are they definitely confirmed to be in a different configuration than other GM applications? Any information would definitely help me make a decision about this motor swap. An earlier answer said that you don't offer mounting plates for this engine, but is that because it absolutely has a different mounting configuration, or because you aren't sure about the motor mounts on this motor? Thanks in advance for giving more details about this issue.

    by 61 Big Body

    • 11 years ago

    1 answer

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    Are there universal engine mount swap plates available for this engine like the ls plates that are available

    by maurice

    • 11 years ago

    1 answer

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    I was wonder if this engine would fit my 67 cadillac deville 429 in it In wat would I have to do to make it fit

    by joechacon

    • 11 years ago

    2 answers

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