ACE Performance is the only company to offer COMPLETE long blocks, our engines aren’t shipped naked without valve covers or oil pans, they are complete and ready to drop into your vehicle! We also offer an optional dyno tuning service on all long blocks or turnkey engine builds.

All long block engines come with a 12 months limited warranty. Tuning, install or user errors are not covered by our warranty.

LSx Long Blocks

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  • Hot
    turbo LSX long block

    1000hp 370ci LSx

    $8,512.00

    1000hp rated 370ci LS Long Block.

    COMPLETE LONG BLOCK with oil pump, oil pan, front and rear covers, valley cover and valve covers.

    Based on a seasoned Gen IV 6.0L Iron short block with Callies rods, CP Forged pistons and Cathedral port heads. Other options available in the drop down menus.

    Twin Turbo, Single Turbo or supercharged.

    x58 reluctor wheel

  • Hot
    turbo LSX long block

    1600hp 408ci LSx

    $16,880.00

    1600hp rated Dart 408ci/427ci LS Next Long Block.

    COMPLETE LONG BLOCK with oil pump, oil pan, damper, flex plate, front and rear covers, valley cover and valve covers.

    Based on a Dart LS Next SHP skirted block with Callies forged rotation assembly &  CNC ported 6 bolt heads. ALL NEW parts. 

    Twin Turbo, Single Turbo or supercharged.

    x58 reluctor wheel

  • 1500hp LS engine

    1800hp 427ci Turbo LSx

    $18,455.00

    1800hp rated Dart 427ci LS Next.

    COMPLETE LONG BLOCK with oil pump, oil pan, damper, flex plate, front and rear covers, valley cover and valve covers.

    Based on a Dart LS Next SHP skirted 6 bolt block, Callies DragonSlayer rotation assembly, CP Carrillo pistons and AFR CNC LS3 6 bolt heads. ALL NEW parts. 

    Twin Turbo, Single Turbo or supercharged.

    x58 reluctor wheel

  • 2000hp LS Engine

    2000hp+ 427ci Dart LS Next

    $22,850.00

    2000hp 427ci Dart LS Next

    COMPLETE long block, oil pan to valve covers

    Callies Magnum CCW crankshaft, Callies Ultra I beam rods and Frankenstein or AFR CNC rectangle port heads. ALL NEW parts. 

    Twin Turbo or Single Turbo

    x58 reluctor wheel