![Speedmaster® PCE305.1127 Chevy SBC 383 ci 6.0" 4.030" 1.100" 0.927" Flat Top Hyper Pistons [Coated] 2.5mm](https://d2c5keh8asbas7.cloudfront.net/ProcompElectronics/PCE305+-+Pistons/6-+HYP+2-2VR+CT-COAT/PCE305.1001.JPG)
![Speedmaster® PCE305.1127 Chevy SBC 383 ci 6.0" 4.030" 1.100" 0.927" Flat Top Hyper Pistons [Coated] 2.5mm](https://d2c5keh8asbas7.cloudfront.net/ProcompElectronics/PCE305+-+Pistons/6-+HYP+2-2VR+CT-COAT/PCE305.1001_A.JPG)
Speedmaster®
Chevy SBC 383 ci 6.0" 4.030" 1.100" 0.927" Flat Top Hyper Pistons [Coated] 2.5mm
Specs
| Brand: | Speedmaster |
| Part Number: | PCE305.1127 |
| Part Type: | Pistons |
| Bore (in): | 4.030 in. |
| Piston Style: | Flat top, with two valve reliefs |
| Piston Material: | 2060 Hypereutectic aluminum |
| Compression Distance (in): | 1.100 in. |
| Piston Head Volume (cc): | -4.00cc |
| Max Rod Length (in): | 6.000 in. |
| Wrist Pin Style: | Full Floating |
| Pin Diameter (in): | 0.927 in. |
| Piston Ring Thickness: | 1.5mm x 1.5mm x 2.5mm |
| Quantity: | Sold as a set of 8. |
| Calculator | Compression Calculator |
| Notes: | Requires 0.020" rail spacer support (PCE308.1002) and piston rings (PCE306.1063) |
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.
Prop 65 Warning
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.