Big Bock Chevy 557 4.500 Bore 1.220 +46.9cc
- Bore: 4.500"
- Stroke: 4.375"
- Rod Length: 6.385"
- Compression Height: 1.220"
- Dome Height: +0.650"
- Dome/Dish Volume: +46.9cc
- Reference Chamber: 118.0cc
- Catalog Compression Ratio: 14.50:1
- Piston Weight: 682g
- Resulting Displacement: 557 cid
