JE Pistons LS Series Flat Top 311966L Piston, Forged, Top, 2-Valve Reliefs, 4.070 in. Bore, 3.622 in. Stroke, 6.125 in. Rod, 1.304 in. Compression, Chevy, Left, Each
JE Pistons LS Series Flat Top 311966L Piston, Forged, Top, 2-Valve Reliefs, 4.070 in. Bore, 3.622 in. Stroke, 6.125 in. Rod, 1.304 in. Compression, Chevy, Left, Each
A$512.33
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Description
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 04:07:28
Features
Note for Pistons, Rings, Rotors, Rods and engine internals
Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.
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Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | JE Pistons |
| StreetFX SKU | jep311966L |
| SFX Item ID | 4802049 |
| Accounting SKU | jep-311966L |
| Manufacturer SKU | 311966L |
| Manufacturer UPC | 193564207760 |
| Alternative References | 311966L, JEP-311966L |
Piston, Forged, Flat Top, 2-Valve Reliefs, 4.070 in. Bore, 3.622 in. Stroke, 6.125 in. Rod, 1.304 in. Compression, Chevy, Left, Each
JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for domestic applications, and they have been performance-proven in victory lane time and time again with the ultimate combination of durability and performance.
JE Pistons LS Series flat top pistons are single replacements. Available in different bore sizes for right or left, the pistons are specifically engineered for extreme applications up to, and including, professional competition. In such environments, the higher compression ratios and boost necessitate the high-tensile strength of forged 2618 aluminum construction. The skirts feature a proprietary Forged Side Relief (FSR) forging design that minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin. High-quality, case hardened 5115 low carbon steel wrist pins and retainers are included. Equip your engine with the best in forged pistons—JE Pistons.
| Product Attributes | |
|---|---|
| Brand | JE Pistons |
| Manufacturer's Part Number | 311966L |
| Part Type | Pistons |
| Product Line | JE Pistons LS Series Flat Top Pistons |
| UPC | 193564207760 |
| Piston Rings Included | No |
| Bore (in.) | 4.070 in. |
| Bore (mm) | 103.378mm |
| Stroke | 3.622 in. |
| Engine Stroke Type | Stock |
| Actual Engine Displacement | 6.2L/377 |
| Rod Length | 6.125 in. |
| Piston Style | Flat top, with two valve reliefs |
| Piston Material | Forged aluminum |
| Compression Height (in.) | 1.304 in. |
| Piston Head Volume (cc) | +5.00cc |
| Wrist Pin Style | Press-fit or floating |
| Wrist Pin Retainers Included | Yes |
| Wrist Pin Included | Yes |
| Pin Diameter (in.) | 0.927 in. |
| Piston Ring Thickness | 0.047 in. x 0.059 in. x 0.118 in. |
| File Fit | No |
| Gapless | No |
| Remanufactured | No |
| Quantity | Sold individually. |
| Notes | Fits left side exhaust valve orientation. |
Compatibility
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