When you're tackling a marine propulsion project, the most important question is whether you need more power or more control. A fresh engine changes what the boat can do; a trim system changes how it does it. The Dodge V10 8.0L Indmar marine inboard engine and the Volvo Penta 21936288 boat trim system sit at opposite ends of that decision.
Quick Verdict
If your boat needs a new heart, the Indmar V10 is the rare, new engine you've been waiting for. If your current power is healthy and you want better bow and list control, the Volvo Penta 21936288 gives you that with touch-button precision.
At a Glance
| Product | Price | Key Specs | Best For |
|---|---|---|---|
| Dodge V10 8.0L Indmar Marine Inboard Engine | USD 9,500 | 305 HP, 450 lb-ft torque, 4-stroke, New | Complete repower projects |
| Volvo Penta 21936288 Boat Trim System | USD 1,799 | Four-button trim control, 2-year warranty | Fine-tuning existing power |
Where the Dodge V10 8.0L Indmar Wins
This is the choice for a full repower. It's a marine engine built by Indmar based on the Dodge V10 8.0L truck engine-similar to the Viper but with an iron block-and it's designed for low-end torque. A never-fired V10 in new condition means you're starting with a clean slate, so you're getting a truly fresh powerplant.
Where the Volvo Penta 21936288 Trim System Wins
If you already have an engine that runs well and you want to optimize the boat's attitude, this trim system is the smarter investment. Four push buttons let you adjust bow up, bow down, list port, and list starboard, while indicators display the position of the port and starboard interceptor units. It's a new Volvo Penta component, and it carries a 2-year warranty. Because it's a trim system, it won't add power-but it can make the power you have deliver a smoother, more controlled ride.
Product Notes
Dodge V10 8.0L Indmar Marine Inboard Engine
Choose this if you're repowering and want a 0-hour, never-fired engine with 305 HP and 450 lb-ft of torque. It's based on the Dodge V10 8.0L truck engine and built by Indmar for marine use, so it's all about low-end grunt. The 4-stroke cycle and iron-block construction are key to that torque delivery. The practical downside is that it has been stored as a show piece for years and shows some scrapes and scratches despite being new, and it comes with no warranty. You're buying the engine itself, so your project budget should account for anything needed beyond the long-block.
Volvo Penta 21936288 Boat Trim System
If your engine is already running well, this trim system is the finishing touch. The controls are intuitive, and the position readouts keep you informed of the interceptor locations. It's a new system made in Sweden. The control panel is simple enough to learn in one outing, and the readouts remove any guesswork. This is a focused upgrade. The limitation is that a trim system can't fix a tired engine-it only trims the boat's angle. If your power is already solid, though, this is a low-stress way to upgrade handling.
Final Choice by Use Case
For a complete repower, the 0-hour Dodge V10 8.0L Indmar is the engine for you. For a boat that already has good power but rides poorly, the Volvo Penta 21936288 is the $1,799 solution that puts bow and list control at your fingertips. If your budget is around $9,500 and your boat needs an engine, buy the Indmar. If you're happy with your power but not your trim, buy the Volvo Penta.
