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In-Store Pickup Location

Eagle Cast Steel Crankshafts 104283980

Crankshaft, 2-Piece Seal, External Balance, Cast Steel, Ford, 428, 3.980 in. Stroke, Each

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  • Order this item and get free delivery and handling on your entire order! Offer excludes truck freight and oversize fees. Valid on orders shipped in the contiguous United States.

Brand: Eagle Specialty Products

Manufacturer's Part Number: 104283980

Part Type: Crankshafts

Product Line: Eagle Cast Steel Crankshafts

Summit Racing Part Number: ESP-104283980

UPC: 793348001708

Rear Main Seal Style: 2-piece

Engine Stroke (in): 3.980 in.

Crankshaft Material: Cast steel

Engine Balance: External

Lightened: Yes

Requires Narrow Bearings: No

Rod Bearings Included: No

Main Bearings Included: No

Crankshaft Snout Style: Standard

Weight: 65.000 lbs.

Quantity: Sold individually.

In-Store Pickup: Choose In-store pick-up (OH, NV, GA, TX) on our web site.

Tool Stroker Combinations

If you need a crankshaft that's dependable, but don't want to empty your bank account, Eagle Specialty Products has the solution. These cast steel crankshafts for Chevy feature .092 radii on the rod, main journals, a rear seal, and a snout for increased strength. The crankshafts for Ford have .125 radii on all rod and main journals. Each of these cranks is inspected for dimension, size, and stroke accuracy. They have a journal finish of 6 R.A. or less and a target bob weight of +/- 2 percent for a reduced balancing time.


Questions & Answers Ask a Product Question

what do I need for a front harmonic balancer and a flex plate balanced (Ford AOD)to work with this crank, would need to buy both new as it is a project

Asked by DANIEL on April 06, 2018


Thank you for your question. The Eagle Specialty Products 104283980 crankshaft is compatible with an internal balancer and external balance flexplate. We offer a compatible Professional Products part number 80009 balancer. Unfortunately, at this time we do not have an adapter kit to put an AOD transmission behind a Ford big block FE engine.

Summit RacingSummit Racing Answer - June 26, 2018

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Will this part require balancing at a machine shop?

Asked by DWIGHT on June 04, 2017


Thank you for your question. Eagle Specialty Products 104283980 is balanced externally and will not require balancing at a machine shop.

Summit RacingSummit Racing Answer - July 10, 2017

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Most Helpful Reviews Review This Product

1 Customer Reviews for Eagle Specialty Products 104283980 - Eagle Cast Steel Crankshafts

Average Customer Review

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Needed work out of the box

Summit RacingSummit Racing Verified Purchase

After installing the crankshaft in my 390 FE using the proper main bearings, noticed that I couldn't turn the crank over. The main bearing caps we're only hand tightened and that crank was locked solid. I had my block aligned honed hoping it would fix the issue and it still locked up. After that, I took the crank, main bearings and block to machine shop. It turned out that the rear oil slinger/scraper on the crank was not machined to spec and was causing the binding. The rest of the crank measured within specs. more

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Reviewer: from Canada

Date: April 01, 2019

Ease of Installation

Some parts are not legal for use in California or other states with similar laws / regulations

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