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Butler Performance Custom Short Block Kit, 400 Block, 434-494 cu. in. (Unassembled)

BP-SB-Kit-400

  • Customized Butler Performance Short Block
  • Option to send us your block
  • Choose Bore Size, Stroke, Crank, & Rod
  • Choose 4.000" to 4.500" Stroke
  • Create a custom package tailored to you
  • All short blocks undergo the "Butler Process"

Pricing: $3,799.00

Customize Your Item

- Choose Your Piston -
 * required
- Choose Your Assembly -
 * required
- Choose Main Cap Upgrade -
 * required
Qty:

Description

434-494 CI short block kit
Complete Internally Balanced longrod rotating assembly & 
high-performance prepped block

  • 4.000", 4.210", 4.250", or 4.500" stroke cast or forged crank    (4-Bolt Billet Mains Caps recommended for 4.5" stroke)
  • Internally Balanced
  • Ross Racing Pistons (Bore 4.155 - 4.181 440 grams)-Flat Top (Dish or Dome/additional charge)
  • H-Beam Rods
  • File fit rings
  • Performance Rod bearings
  • Performance Main bearings
  • 400 Performance 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
  • Can be upgraded with various options

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

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