Speedmaster®
Chevy SBC 383 ci 6.0" 4.020" 1.100" 0.927" Flat Top Hyper Pistons [Coated]
![Speedmaster® PCE305.1005.02 Chevy SBC 383 ci 6.0" 4.020" 1.100" 0.927" Flat Top Hyper Pistons [Coated]](https://product-arena.s3-us-west-1.amazonaws.com/ProcompElectronics/PCE305%20-%20Pistons/PCE305.SBC/PCE305.SBC.jpg?resizeid=225&resizeh=50&resizew=50)
![Speedmaster® PCE305.1005.02 Chevy SBC 383 ci 6.0" 4.020" 1.100" 0.927" Flat Top Hyper Pistons [Coated]](https://product-arena.s3-us-west-1.amazonaws.com/ProcompElectronics/PCE305%20-%20Pistons/PCE305.SBC/PCE305.SBC_A.jpg?resizeid=225&resizeh=50&resizew=50)
![Speedmaster® PCE305.1005.02 Chevy SBC 383 ci 6.0" 4.020" 1.100" 0.927" Flat Top Hyper Pistons [Coated]](https://product-arena.s3-us-west-1.amazonaws.com/ProcompElectronics/PCE305%20-%20Pistons/PCE305.SBC/PCE305.SBC_B.jpg?resizeid=225&resizeh=50&resizew=50)
![Speedmaster® PCE305.1005.02 Chevy SBC 383 ci 6.0" 4.020" 1.100" 0.927" Flat Top Hyper Pistons [Coated]](https://product-arena.s3-us-west-1.amazonaws.com/ProcompElectronics/PCE305%20-%20Pistons/PCE305.SBC/PCE305.SBC_C.jpg?resizeid=225&resizeh=50&resizew=50)
Product Information
Specs
| Brand: | Speedmaster |
| Part Number: | PCE305.1005.02 |
| Part Type: | Piston |
| Bore (in): | 4.020 in. |
| Piston Style: | Flat top, with two valve reliefs |
| Piston Material: | 2060 Hypereutectic aluminum |
| Compression Distance (in): | 1.425 in. |
| Piston Head Volume (cc): | -4.00cc |
| Wrist Pin Style: | Full Floating |
| Pin Diameter (in): | 0.927 in. |
| Max Rod Length: | 6.000 in. |
| Piston Ring Thickness: | 1.5mm x 1.5mm x 3mm |
| Quantity: | Sold as a set of 8. |
| Note: | Requires Oil Rail Support (PCE.308.1015) |
Description
Hypereutectic pistons with anti-friction skirt coating are manufactured from a aluminum alloy which contains 16 percent silicon for greater strength and wear resistance. By combining the hypereutectic alloy with the permanent mold process, the piston is strong, lightweight, and thermally-efficient. These pistons run tighter piston-to-wall clearances, improving ring seal and longevity. They are ideal for street, bracket racers and oval track.
Warranty Information
Prop 65 Warning
Installation Guide
Our AI assistant generates a step-by-step guide for this product — covering installation, maintenance, and troubleshooting.
This AI-generated guide is for general reference only and does not constitute official Speedmaster product documentation. Always verify fitment, torque specifications, and safety requirements before installation.