Butler Performance Custom Short Block Kit, 400 Block, 433-440 ci, 4.000" Str (Unassembled)

SKU: BP-SB-Kit-400-4000

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

Availability: 10-12 weeks (slightly longer for full custom pistons). Ships to business address. Residential or liftgate are available for additional charges

Pricing: $6,699.00

Customize Your Item

Piston type may change depending on compression ratio desired with your particular head cc. Our techs will verify all compression numbers before proceeding with piston selection on our end.

Choose Your Piston Option

- Choose Your Piston Option -

* required

Enter desired compression ratio or specific Dish cc requested. Recommended CR for pump gas is +/- 9.5:1 for cast iron heads and +/- 10.5:1 for Aluminum heads.

Option for Billet Center and Front Main Caps with Line Hone and necessary machining for the upgrades

Choose Main Cap Upgrade

- 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"forged crank
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

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

SKU: BP-SB-Kit-400-4000
Stock #: BP-SB-Kit-400-4000
Brand: Butler Performance
Availability Remarks: 10-12 weeks (slightly longer for full custom pistons). Ships to business address. Residential or liftgate are available for additional charges
Condition: New

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