Ilmor MV8 430 (LT-Based) vs Yamaha XTO Offshore 450 V8
MV8 430 (LT-Based)
XTO Offshore 450 V8
| Spec | Ilmor MV8 430 (LT-Based) | Yamaha XTO Offshore 450 V8 |
|---|---|---|
| Power & Performance | ||
| Horsepower | 430 HP | 450 HP |
| Displacement | 6200 cc ← | 5559 cc |
| Configuration | 8 Cyl / V8 (90°) | 8 Cyl / V8 60° |
| Weights & Dimensions | ||
| Dry Weight | 320 kg (706 lbs) ← | 437 kg (964 lbs) |
| Mechanical & Electrical | ||
| Gear Ratio | 1.75 | 1.79:1 |
| Alternator | 1197 W | 1224 W ← |
| Fuel Delivery | EFI | Direct Injection |
| Maintenance | ||
| Spark Plug | ACDelco 41-114 | NGK ILFR6G-E |
| Engine Oil | 15W-50 Synthetic | 5W-30 FC-W (Full Synth) |
Technical Comparison Analysis
Power & Displacement
Comparing the Ilmor MV8 430 (LT-Based) and Yamaha XTO Offshore 450 V8 shows a displacement difference of 641cc. 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 Ilmor is the lighter option at 320kg, offering a weight saving of 117kg 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 Yamaha offers the best charging performance with a 1224W 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.