Swap or Rebuild??

[ivorton74]

So I started my truck today and realized its really beginning to smoke more and more. At first it would smoke on start up but now it smokes sometimes while driving but the engine does still run great and strong. So Im tryin to decide..should I have my motor rebuilt or should I swap in a newer motor? Which would be cheaper? I really woulld like a vortec motor out of a 95 suburban or something but they might be pricey. What would u guys do? Gimme ur humble opinions