I’m looking to swap something into a Grand Wagoneer. The vehicle currently doesn’t run, so I’m hoping to take the opportunity to bring the engine closer to current standards of both performance and efficiency.

The idea of the build is a family hauler to camping trips. Some trails, but nothing too crazy like rock crawling; maybe some towing. So something torquey is probably more desirable.

I’m also hoping to be able to cruise down the highway with decent fuel economy. I know tire size and axel ratios have a big impact on this, but hopefully starting with a decent engine can help.

My first thoughts were something LS, of course haha. But was contemplating maybe something diesel.

Any input would be greatly appreciated.