Thru the oil pan on a vortec 350??? In a half ton P/U.
Not long, as long as you can drop the oil pan without the crossmember or exhaust getting in the way. Probably about 30 minutes to an hour depending on skill level once the oil pan is dropped And make sure you follow proper torqueing procedures when reinstalling or you'll be replacing the entire engine next
Through the oil pan, if you have a clear shot. It will take about 2 hours. However, that is not really the best thing to do as you will want to have the crankshaft milled down so that it is perfectly round. Otherwise the bearings will slip again. That will take time at a machine shop and generally cost around $100. Also you will need oversized rods after doing that. Also to do the above you will need to pull the engine out.
Ask yourself WHY this need to be done when your engine should last for 300,000 miles WITHOUT needing ANY internal parts. The answer of course is that you have benn using INFERIOR WAX based engine oils. Even now, you PROBABLY do NOT need new bearings, but you DO need an engine flush and switch over to any of the good synthetic oils with a 0 series rating. Your engine life will extend and your bearings will be protected in the coldest weather, even at START_UP, which is where most engine wear actually occurs. TRUST ME, I know!! You shouldn' tneed crank resurfacing, but take the time to platigage the bearings, or have someone who KNOWS what they are doing repair this thing, Usualy a little crocus cloth will clean the crank surfaces perfectly. THINK AHEAD, and LEARN form this experience. USE DEXOS oil of Mobil One or Amsoil in the future. You will save money and your engine sensors and converter will last longest. GOOD LUCK and HAPPY REBUILDING!!!
