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Butler Performance Budget Short Block, 400 Block, 406-412 cu. in. (Assembled)

BP-SB-400-557

  • Customized Butler Performance Short Block
  • Choose Bore Size
  • 3.750" or 4.000" Stroke
  • Great budget friendly package tailored to you
  • Rated for up to 500hp only
  • All short blocks undergo the "Butler Process"

Availability: Contact us for lead time
Pricing: $4,599.00

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Description

406-412 CI short block (Assembled)
Complete Internally Balanced rotating assembly prepped block

  • 3.750" stroke Forged crank
  • Internally Balanced
  • Available Bores- 4.150" (.030" over), 4.160" (.040" over), and 4.18" (.060" over)
  • Icon Flat Top Pistons
  • Total Seal Rings- File Fit
  • 6.625" I-Beam Rods on 3.750" Stroke
  • 6.635" H-Beam Rods on 4.000" Stroke
  • Performance Rod Bearings
  • Performance Main bearings
  • Includes Viton Rear Main Seal
  • 400 (557 Model) 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
    •  Assembled by a Butler Engine Specialist

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

Compression Calculator

400 Block Head cc w/-8cc Flat top
Stroke Bore 72cc 87cc 96cc
3.750" 4.155" 10.38 9.02 8.38
  4.181" 10.48 9.11 8.46
4.000"

4.155"

11 9.55 8.87
  4.181" 11.12 9.65 8.96
4.210" 4.155" 11.53 10 9.28
  4.181" 11.65 10.1 9.38
4.250" 4.155" 11.63 10.09 9.36
  4.181" 11.75 10.19 9.46
4.500" 4.155" 12.25 10.62 9.85
  4.181" 12.38 10.73 9.96
Click here to use our compression calculator to calculate compression with thicker head gaskets, decked block, or other variables.

Details

  • BP-SB-400-557
  • BP-SB-400-557
  • Butler Performance
  • Contact us for lead time
  • New

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