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

SKU: 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"

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

Pricing: $7,299.00

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.

Qty:

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
6.635" 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

SKU: BP-SB-Kit-389-4000
Stock #: BP-SB-Kit-389-4000
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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