What other 3.4L engine will go into a 2000 Pontiac Montana?

The 2000 Pontiac Montana can also accommodate the 3.4L engine from the Chevrolet Venture or the Oldsmobile Silhouette, as they share similar platforms and engine compatibility. Additionally, the 3.4L engine used in the Pontiac Grand Am and Chevrolet Impala from the same era may also be a fit, provided the necessary adaptations are made. Always ensure compatibility with engine mounts, wiring harnesses, and other components before proceeding with an engine swap.