Mid-way on the block (both sides) there is a threaded plug (3/8"), this is right above where the oil pan bolts up (so lowest point). You can drain the block from both sides. But in your case you'll probably only have to drain the starter side. I use a plumping thread sealant you find at Home Depot ...red can ...sealant is yellow colored ...don't remember what it's called, but works very well. Not expensive either. GOOD LUCK!

 

I think that plug has been in the block from the day it was first assembled. I couldn't get it to budge by rachet. Hooked up my impact on lowest setting and the allen bit spun in the hole. I'm going to pull one of the lower bolts and pump air into the radiator to push the water out.

I wonder if this thread was too beginnerish... .

 

I think that plug has been in the block from the day it was first assembled. I couldn't get it to budge by rachet. Hooked up my impact on lowest setting and the allen bit spun in the hole. I'm going to pull one of the lower bolts and pump air into the radiator to push the water out.

I wonder if this thread was too beginnerish... .

Remove the two farthest back head lower bolts. They will drain enough coolant out.

I don't believe this thread will be moved, we will just have to see how this plays out.

 

Those plugs rarely come out easy, even when the blocks on an engine stand. One tip is to heat the plug with a torch and touch some beeswax to the threads, let it wick down in the threads. Work the plug back & forth. Then pray it works. There's all kinda crap rusted to the back side.

 

I have used candle wax with success in the past. K&W Knocker Loose is my favorite though.

 

I've used heat before to remove threaded plugs, but with water behind it you'll have to use serious heat to make a difference ...i.e. I'm thinking cut torch type heat. Hopefully you have the brass plugs ...steel would be a problem. Good Luck!