CNC-Motorsports is proud to offer fully machined race prep GM blocks. We offer the 305, 350, LS2, LS3 and LSX blocks full machined and ready for you to assemble. Custom machine work options are available to meet most any of your performance requirements. The best in performance race prep engine blocks is at CNC-Motorsports.

6 Item(s)

per page
  • CNC-305RS-PREPPED
    $1,390.95
    Chevy 305 Racesaver Race Prep Engine Block, Align-Honed, Bell Housing Squared, Parallel Square Decked to 9.000", Honed with Torque Plates to 3.776" Bore, Lifter Bore Honed, Cam Bearings and Freeze Plugs installed, Block Cleaned and Ready For Assembly
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    Freight Charge
    This part will be shipped via truck freight, additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount.
  • GMP-10066034-PREP
    $1,575.95
    SB Chevy 350 Race Prep Engine Block, 2 Piece Rear Main Seal, 4 Bolt Main, Align-Honed, Bell Housing Squared, Parallel Square Decked to 9.005", Honed with Torque Plates, Lifter Bore Honed, Cam Bearings and Freeze Plugs installed, Block Cleaned and Ready For Assembly *New GM Block*
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    Freight Charge
    This part will be shipped via truck freight, additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount.
  • GMP-10105123-PREP
    $1,678.95
    SB Chevy 350 Race Prep Engine Block, 1 Piece Rear Main Seal, 4 Bolt Main, Align-Honed, Bell Housing Squared, Parallel Square Decked to 9.005", Honed with Torque Plates to 4.030" Bore, Lifter Bore Honed, Cam Bearings and Freeze Plugs installed, Block Cleaned and Ready For Assembly *New GM Block* Machined For Roller Cam
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    Freight Charge
    This part will be shipped via truck freight, additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount.
  • GMP-12673475-PREP
    $2,688.95
    GM L92 Aluminum race prep engine block, Align-Honed, Bell Housing Squared, Parallel Square Decked, Honed with Torque Plates, Lifter Bore Honed, Install Cam Bearings and Freeze Plugs, Block Cleaned and Ready For Assembly
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    Freight Charge
    This part will be shipped via truck freight, additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount.
  • GMP-12602691-PREP
    $2,265.95
    GM GEN III LS2 6.0L Aluminum race prep engine block, Align-Honed, Bell Housing Squared, Parallel Square Decked MLS Surface, 4.005 Bore Honed with Torque Plates, Lifter Bore Honed, Install Cam Bearings and Freeze Plugs, Block Cleaned and Ready For Assembly
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    Freight Charge
    This part will be shipped via truck freight, additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount.
  • GMP-19369841-PREP
    $2,265.95
    GM Gen III LS2 6.0L Race Prep Engine Block, Align-Honed, Bell Housing Squared, Parallel Square Decked MLS Finish, Honed with Torque Plates 4.005 Bore, Lifter Bore Honed, Install Cam Bearings and Freeze Plugs, Block Cleaned and Ready For Assembly
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    Freight Charge
    This part will be shipped via truck freight, additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount.

6 Item(s)

per page