Stock Blocks

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.

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  1. CNC-305RS-PREPPED PART NUMBER
    CNC Motorsports Chevy 305 Racesaver Race Prepped Block
    CNC Motorsports Chevy 305 Racesaver Race Prepped Block - 3.776 Bore
    $1,640.95
    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 Learn More
    FREIGHT CHARGE
    This part will be shipped via truck freight and additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount.
  2. GMP-12729604-PREP PART NUMBER

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