Seven Marine 627 (V8 Supercharged) vs Ilmor MV8 570 (Naturally Aspirated)
627 (V8 Supercharged)
MV8 570 (Naturally Aspirated)
| Spec | Seven Marine 627 (V8 Supercharged) | Ilmor MV8 570 (Naturally Aspirated) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 627 HP | 570 HP |
| Displacement | 6162 cc | 7400 cc ← |
| Configuration | 8 Cyl / V8 90° | 8 Cyl / V8 (90°) |
| Weights & Dimensions | ||
| Dry Weight | 497 kg (1096 lbs) | 376 kg (829 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 1.75 | 1.5 |
| Alternator | 2160 W ← | 1197 W |
| Fuel Delivery | EFI + Supercharger | EFI |
| Maintenance | ||
| Spark Plug | ACDelco 41-104 | ACDelco 41-110 |
| Engine Oil | 15W-50 Synthetic | 15W-50 Synthetic |
Technical Comparison Analysis
Power & Displacement
Comparing the Seven Marine 627 (V8 Supercharged) and Ilmor MV8 570 (Naturally Aspirated) shows a displacement difference of 1238cc. The Ilmor features a larger 7400cc block, which typically provides superior low-end torque and better hole-shot performance when pushing heavy loads or reaching planning speeds.
Weight & Rigging
In terms of transom weight, the Ilmor is the lighter option at 376kg, offering a weight saving of 121kg over its competitor. This weight reduction is critical for smaller hulls or boats with limited transom capacity where every kilogram affects the center of gravity and drainage efficiency.
Electrical & Features
For boats equipped with modern electronics, sonar, and shallow-water anchors, the Seven Marine offers the best charging performance with a 2160W alternator. Choosing the right power-to-weight profile between these two 4-stroke engines depends heavily on your specific boat's displacement and daily power requirements.