Ilmor MV8 430 (LT-Based) vs Mercury V10 400hp SeaPro
MV8 430 (LT-Based)
V10 400hp SeaPro
| Spec | Ilmor MV8 430 (LT-Based) | Mercury V10 400hp SeaPro |
|---|---|---|
| Power & Performance | ||
| Horsepower | 430 HP | 400 HP |
| Displacement | 6200 cc ← | 5700 cc |
| Configuration | 8 Cyl / V8 (90°) | 10 Cyl / V10 64° Naturally Aspirated |
| Weights & Dimensions | ||
| Dry Weight | 320 kg (706 lbs) | 316 kg (697 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 1.75 | 2.08:1 |
| Alternator | 1197 W | 1890 W ← |
| Fuel Delivery | EFI | EFI |
| Maintenance | ||
| Spark Plug | ACDelco 41-114 | NGK LKAR7C-9 |
| Engine Oil | 15W-50 Synthetic | Mercury 10W-30 SeaPro |
Technical Comparison Analysis
Power & Displacement
Comparing the Ilmor MV8 430 (LT-Based) and Mercury V10 400hp SeaPro shows a displacement difference of 500cc. The Ilmor features a larger 6200cc 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 Mercury is the lighter option at 316kg, offering a weight saving of 4kg 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 Mercury offers the best charging performance with a 1890W 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.