Eagle Chevrolet Big Block 454/502 Forged Crankshaft 4.250in Stroke
Eagle Chevrolet Big Block 454/502 Forged Crankshaft 4.250in Stroke
A$2,830.02
Available from MFR.
This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.
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Description
Eagle forged 4340 steel center-counterweighted Cranks feature a non-twist forging, center counterweights for added stability at high RPM and high-power applications. 125" fillet radiuses for superior strength so chamfered / narrowed bearings required, nitrided surface and micropolished. Intended for the most demanding applications.
Product Overview
Eagle Crankshafts feature exceptional strength and quality at a reasonable price. Eagle cranks are forged in a non-twist forging and undergo a multi-stage heat treatment process as well as stress relieving, shot peening, and nitriding. They are magnafluxed and sonic tested to insure quality. Every journal is micropolished to a 3 or better R.A. On all journals, a 0.125†radius is used to increase strength, so chamfered bearings must be used. The perfect choice for engines up to 1500HP!
*4340 Steel Crankshafts*
Eagle forged 4340 steel crankshafts are forged from SAE 4340 steel, feature a non-twist forging, multi-stage heat treat process, stress relieving, shot-peening, and nitriding for superior strength and reliability in the most demanding applications. Each journal is micropolished to a 3 r.a. or better. A .125†radius is used to increase strength, so chamfered bearings must be used. All use a Ford rod journal width regardless of journal diameter. All are designed for internal balance. These are the perfect choice for applications up to 1500 hp.
Eagle Forged 4340 Steel Crankshafts are also available in 'Lightweight' versions - Counterweights are knife-edged for reduced weight and less windage. Typical weight reduction is 5-6 lbs.
*Cast Steel Crankshafts*
Eagle cast steel crankshafts offer an excellent alternative to a factory cast crank. All radii are .092†so O.E. style bearings can be used. Target bobweight is +/- 2% GUARANTEED! Recommended for use up to 500hp. Designed for 28 in-oz. external balance.
Product Details
| Balance Type: | Internal |
|---|---|
| Bobweight: | 2350 |
| Crankshaft Stroke: | 4.250 in |
| Description: | Forged Steel Crankshaft; Center Counterweights |
| Engine Stroke: | 4.25 |
| Flywheel Bolt Count: | 6 |
| Flywheel Register Diameter: | call |
| Intended Balance: | internal |
| Main Journal Diameter: | 2.749 |
| Main Journal: | 2.749 in |
| Material: | Forged 4340 steel |
| Min. Rod Length: | 6.385" |
| Minimum Rod Length: | 6.385 in |
| Part Number: | eag445642526385 |
| Pilot Bore Diameter: | 1.094 in |
| Prop 65 (C, R or CR): | C |
| Prop 65 - Long Label: | This product contains nickel, which is known to the State of California to cause cancer |
| Prop 65 - Short Label: | prop65_warning.jpg |
| Prop 65 Long: | This product contains nickel, which is known to the State of California to cause cancer. |
| Prop 65 Warning Chemical Listing: | Nickel |
| Prop 65 Yes/No: | Yes |
| Rear Seal Diameter: | call |
| Rod Journal Width: | 2.000 in |
| Rod Journal: | 2.2 in. |
| Snout Diameter: | 1.6 in. |
| Stroke: | 4.000" |
| Target Bobweight: | 2350g |
| Title: | ESP 4340 CRANK CHEVY BB INT 1 PC 4.250 in STR |
Application Summary
CHEVY BB
Part Type
Engine Crankshaft
Specifications
- Product Attributes - Brand
- Eagle Specialty Products
- Product Attributes - Manufacturer's Part Number
- 445642526385
- Product Attributes - Part Type
- Crankshafts
- Product Attributes - Product Line
- Eagle Forged 4340 Steel Crankshafts
- Product Attributes - UPC
- 793348022109
- Product Attributes - Engine Stroke (in.)
- 4.250 in.
- Product Attributes - Crankshaft Material
- Forged 4340 steel
- Product Attributes - Engine Balance
- Internal
- Product Attributes - Rear Main Seal Style
- 1-piece
- Product Attributes - Lightened
- No
- Product Attributes - Requires Narrow Bearings
- Yes
- Product Attributes - Rod Bearings Included
- No
- Product Attributes - Main Bearings Included
- No
- Product Attributes - Rod Journal Diameter (in.)
- 2.200
- Product Attributes - Main Journal Diameter (in.)
- 2.749 in.
- Product Attributes - Balancer Bolt Thread Size
- 1/2 in.-20
- Product Attributes - Crankshaft Snout Style
- Standard
- Product Attributes - Weight
- 76.000 lbs.
- Product Attributes - Quantity
- Sold individually.
Reference Information
| Brand Name/s | Eagle |
|---|---|
| StreetFX SKU | eag445642526385 |
| SFX Item ID | 4053261 |
| Supplier Item Code | 4053261 |
| Manufacturer SKU | 445642526385 |
| Manufacturer UPC | 793348022109 |
| Alternative References | ESP-445642526385, 4.250in |
Compatibility
CHEVY BB
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