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Butler Performance Custom Short Block Kit, 389 Block, 421-427 ci, 4.000" Str (Unassembled)

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BP-SB-Kit-389-4000

  • Customized Butler Performance Short Block Kit
  • 4.0000" Stroke
  • Great budget friendly package tailored to you
  • All short blocks undergo the "Butler Process"

Please Call for Availability
(866)762-7527
Availability: 15-17 weeks (slightly longer for full custom pistons). Ships to business address. Residential or liftgate are available for additional charges

Description

389 short block kit
Complete Internally Balanced rotating assembly prepped block

  • 4.000" Stroke forged crank
  • Internally Balanced
  • Choose Flat Top, Dish, or Dome Pistons- Add head casting or head cc info at checkout and we will confirm compression ratio
  • Total Seal Rings- File Fit
  • 6.700" H-Beam Rods on 4.000" Stroke
  • Performance Rod Bearings
  • Performance Main bearings
  • 389 Block prepped block
    • cleaned
    • magnafluxed
    • sonic tested
    • completely deburred
    • bored and honed with torque plate
    • line honed with ARP main studs
    • deck squared
    • cam bearings and brass freeze plugs installed
    • ready to assemble

Included reusable engine cradle

Images for display purposes only and could show optional parts. Contact us for a custom quote for your application and specifications

Details

  • BP-SB-Kit-389-4000
  • BP-SB-Kit-389-4000
  • Butler Performance
  • 15-17 weeks (slightly longer for full custom pistons). Ships to business address. Residential or liftgate are available for additional charges
  • New

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