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Short Block, Racing, GX390 Honda
Short Block, Racing, GX390 Honda

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Our Price: $768.00

Stock Status:(Out of Stock)


Select Piston/Rings

Flat-Top, Cast (88mm) [+$228]
Forged Flat-Top, Standard Bore [+$228]
Forged Flat-Top, 90mm Bore [+$356]
Crankshaft Type/Options

Stock Crankshaft
.160" Stroker Crank, Cast, Balanced [+$241]
.200" Billet Stroker Crank [+$408] Adds Labor for Clearacing
Camshaft Options

No Cam or Lifters
306-0807 Cam & Lifters [+$157]
307-1007 Cam & Lifters [+$157]
Additional Options

Balance Assembly (Included on Strokers) [+$142]

Description -
Honda GX390 Assembled Racing Short Block

  • New Genuine Honda GX390 Block
  • Choice of Piston
  • Crankshaft (Genuine Honda)
  • Billet Connecting Rod
  • ARP Bolt Kit (Includes Head Bolts)
  • Billet Side Cover
  • Block Clearanced for High-Lift Cams
  • Race Prep Assembled with Proper Clearances Set
  • Governor and Low Oil Sensor Removed
  • Balance Shaft (Option to Remove)

Available Options:
  • Cam and Lifters
  • Stroker or Billet Stroker Crank
  • Balancing

Engine Size Options:
  • 88mm (Standard) Bore, Stock Stroke: 390cc
  • 88mm (Standard) Bore, +.160” Stroke: 414cc
  • 88mm (Standard) Bore, +.200” Stroke: 420 cc
  • 90mm Bore, Stock Stroke: 407cc
  • 90mm Bore, +.160” Stroke: 433cc
  • 90mm Bore, +.200” Stroke: 440cc

*Note: Flywheel, fan, or any parts not listed above are NOT included.
Depending on options, short blocks take approximately 1 week to ship. Add an additional week for balancing or strokers.
Picture is for reference only.

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