Small Block Ford 19° / 20° 438 ci 4.125 1.250 +5.77cc
- Bore: 4.125"
- Stroke: 4.100"
- Rod Length: 6.200"
- Compression Height: 1.250"
- Dome Height: +0.250"
- Dome/Dish Volume: +5.8cc
- Reference Chamber: 62.0cc
- Catalog Compression Ratio: 14.50:1
- Piston Weight: 490g
- Resulting Displacement: 438 cid
