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Butler Performance Custom Short Block Kit, 400 Block, 406-412 ci, 3.750" Str (Unassembled)

Butler Performance
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Pricing: $5799.00

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  • BP-SB-Kit-400-3750
    • BP-SB-Kit-400-3750

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

    Availability: Now ships in 4-6 Weeks!!! (slightly longer for full custom pistons). Ships to business address. Residential or liftgate are available for additional charges

    Description

    406-412 CI short block kit
    Complete Internally Balanced rotating assembly prepped block

    • 3.750" stroke Cast or 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
    • 400 (Not the 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
      • 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

    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-Kit-400-3750
    • BP-SB-Kit-400-3750
    • Butler Performance
    • Now ships in 4-6 Weeks!!! (slightly longer for full custom pistons). Ships to business address. Residential or liftgate are available for additional charges
    • New

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