CNC-Motorsports LSX 427

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CNC Competition GM LSX 427 Short Block, Callies Crank, Diamond 9.3:1 Pistons

SKU: CNC-90008-CD

LSX 427 , GM LSX Iron Block, Callies 4340 Crankshaft, Callies Ultra I Beam Rods, Diamond 9.3:1 Pistons with H13 Pins, Fits LS7 Style Heads

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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.
⚠ Prop 65 Warning
⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to

CNC-Motorsports, has quickly raised the bar to a new level in offering high quality short blocks at an affordable price. Our short blocks have become a huge hit among racers and performance enthusiast all over the world. We have the ability to custom build you just about any combination the way you want it. All our short blocks are 100% machined, CNC Machined and blue-printed to our race wining specs. We never cut corners like others just to lessen the price.

  • Callies Dragon Slayer 4340 forged steel crankshaft (4.000 Stroke) **Internal Balance**
  • Calies Ultra I-Beam connecting rods (6.125 Length)
  • Diamond forged -23cc Dish pistons with H13 wrist pins
  • High Performance plasma moly piston ring set
  • High Performance Rod and Main Bearings
  • GM LSX Iron block

    Compression Ratio:
  • 70cc 9.3:1
  • 72cc 9.2:1

    Professionally Machined, Balanced, Assembled and blue printed in house by CNC-Motorsports. Balance card and blue print sheet will be provided to the customer. We can custom build any short block assembly to meet your needs.
  • Additional Information

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    • visa, discover, mastercard &
      paypal accepted

    • Vehicle Make
      Chevy LS
    • Connecting Rod Manufacturer
    • Crankshaft Manufacturer
    • Piston Brand
    • Piston Type
    • Block Material
      Cast Iron
    • Block Brand
    • Notices
      Freight Charge