Can you change crank bearings on a 4.3 vortec without pulling engine?

Yes, it is possible to change the crankshaft bearings on a 4.3 Vortec engine without pulling the engine, but it can be a challenging task. You would need to remove the oil pan and potentially the main caps to access the bearings. Ensure that you have the right tools and follow proper procedures to avoid damaging the engine components. However, this method may not provide as much access as removing the engine, so consider your comfort level and the condition of the engine before proceeding.