• 388ci Balanced SBC Rotating Assembly, Eagle B15405E060
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388ci Balanced SBC Rotating Assembly, Eagle B15405E060

388ci Balanced SBC Rotating Assembly, Eagle B15405E060

Part number: 9EGZ6

$1,530.34 USD
$1,530.34 USD
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  • Free fitment check before you order

388ci Balanced SBC Rotating Assembly. Highlights include plasma-moly standard-gap rings and King SI rod/main bearings and includes matched damper and 168-tooth flexplate. The crankshaft turns the up-and-down motion of the pistons into rotation.

Key features

  • Cast 3.750-inch-stroke crankshaft and 5.700-inch 5140 I-beam rods
  • 3/8-inch ARP 8740 rod bolts; hypereutectic KB Claimer -5cc flat-top pistons
  • Plasma-moly standard-gap rings and King SI rod/main bearings
  • Includes matched damper and 168-tooth flexplate

Specifications

  • Part type: Crankshaft

Fitment

This listing does not name specific vehicles. Match the part number and the specifications with the part you are replacing.

What it does

Crank work comes with bearings, balancing and careful measurement. Using the correct part for your exact engine keeps oil pressure, sealing and timing where the engine was designed to run, and doing related parts at the same time saves taking it apart twice.

Installation & tips

  • Have the rotating assembly balanced if you change pistons, rods or the crank.
  • Main and rod bearings: Always new with a crank.
  • Work on a cool engine with the vehicle secured, and use a service manual for your vehicle for torque specs and procedures.

FAQ

Can I install it myself?
Many owners do this job at home with basic tools and a service manual for their vehicle. If you are not sure, have it fitted by a qualified mechanic.

What should I check before ordering?
Compare the part number, specifications and fitment on this page with your vehicle and with the part you are replacing.

Before you order

  • Measure the part you are replacing and compare it with the specifications above.
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Crankshaft: what to know

A new or reground crank is usually part of a full engine rebuild or stroker build.

Fitment notes

  • Specs, lead time and warranty come from the manufacturer and supplier and can change. The details above this guide are the latest we have.

Not sure it fits? Message us your vehicle details and we'll double-check fitment before you buy.

Ask about fitment

What else to plan for

More for your car: Engine

Questions about crankshaft

Will this fit my car?
Check the title and details above for the vehicles and part number it is listed for. If you are not sure, contact us with your year, make, model, engine and trim and we will confirm fitment before you order.
Do I need balancing?
If the crank, rods or pistons change, balancing is recommended.
Where do specs and warranty details come from?
From the manufacturer. Each brand sets its own specs, lead times and warranty terms, and they can change. The product details above are the latest we have.

Questions & answers

No questions yet about this part. Ask about fitment, what's in the box or installation and we'll answer here.

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