Part Number:
DRT-31182211-PREP

Race Prep Dart Little M Engine Block 31182211 SB Chevy 400 - 4.125 Bore 400 Mains

SB Chevy 400 415 421 427 434 Dart Little M 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, 400 Mains, 4.125 Bore

$4,769.95
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⚠ 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 www.P65Warnings.ca.gov.
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CNC-Motorsports takes great pride in offering a fully race prepped Dart little engine block blue-printed to race specifications that is ready for you to assemble

  • Check and align hone mains if needed, chamfered main parting lines
  • Bell housing surface squared to crankshaft centerline
  • Stroker clearance to 4.000 stroke
  • Parallel square deck the deck surface to your desired deck height
  • Bottom of the cylinders chamfered
  • Top of the cylinder bore chamfered
  • Block de-burred to eliminate sharp edges and casting slag
  • Freeze plug holes and rear cam hole are chamfered
  • All bolt holes and oil galley holes chamfered
  • Oil galley holes tapped
  • Head and main bolt holes tapped
  • Chamfered distributor hole and lightly ball honed to eliminate high spots
  • Hone the block with torque plates to your piston bore size and verified with a profilometer
  • Top of lifter bores chamfered
  • Lifter bore checked and honed to your set of lifters you will be using in your build
  • Install Cam Bearings and Freeze Plugs
  • Block is cleaned and ready to go
  • Little M block has splayed main caps on #2 #3 $4, #1 and #5 cap are 4 bolt main cap

    The Dart Little M Block is the perfect starting point for a powerful and reliable engine for the street or the race track. The Little M uses standard small block components and then adds features you can't get in any production casting. Dart Little M offers the following Features, xtra thick cylinder walls, Scalloped Water Jacket walls, Priority main oiling system, Extra thick decks, Splayed outer bolts, Still Uses Stock Components. The Dart little M block is the perfect engine block for 1500 plus horsepower engine builds. Formerly 31132211
  • More Information
    CNC Part Number DRT-31182211-PREP
    Price $4,769.95
    Manufacturer's Part Number 31182211-PREP
    Brands Dart
    Part Types Engine Block
    Departments Parts
    Vehicle Make SB Chevy
    Bore Size 4.125
    Deck Height 9.025
    Block Series Little M
    Engine Block Material Cast Iron
    Main Caps Steel
    Main Size 400
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