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It's great to hear you're considering options for your 1982 SC! When it comes to engine swaps and upgrades for the 3.0L engine, there are a few factors to consider.
1. **Engine Options**: The 3.4L and 3.6L engines can be good choices for more horsepower. The 3.4L is a more common upgrade and can provide a noticeable increase in power.
2. **Fitment**: The 3.4L engine can be a relatively straightforward swap, but it might not be a direct "drop-in" without some modifications. You may need to adjust motor mounts, wiring harnesses, and possibly the exhaust system. The 3.6L engine is a bit more complex due to the additional factors like engine management that may require more significant modifications.
3. **Boring the 3.0L**: If you’d like to stick with the existing 3.0L engine, it can generally be bored out to a certain extent, usually up to 98mm (from the stock 95mm), but this will depend on the cylinder walls' condition and the engine's overall integrity. Boring can give a slight increase in displacement and power, but it's not as significant as swapping to a larger engine.
4. **Performance Enhancements**: Besides displacement increases, consider performance upgrades like higher compression pistons, improved camshafts, and better intake and exhaust systems. These can help maximize the horsepower without necessarily changing the engine.
5. **Budget and Goals**: It’s important to consider your budget and performance goals as well. More extensive modifications can increase costs significantly, so weigh the performance gains against the investment required
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