Run the engine for 30 seconds or so and drain it again.
Engine block coolant drain plug.
Like the old style that came in 60 s 70 s in the radiator of the pick up s.
If you can get them loose you can drain the water out of the block and flush it too a lot of sediment will be in there.
Drain the radiator close the drain plug and refill it with water.
Hi has anyone put a petcock drain in the engine block instead off just the plain plug.
To make it so much nicer to drain the block when you change coolant or to replace frost plug heaters.
Ict billet 551245 ict billet engine block coolant drain plugs.
Do this several times until it drains out clear.
The block plug is on the passenger side of the block right in front of the motor mount and behind the a c compressor.
They re on the side of engine block just above where the oil pan bolts on about mid ways of the side.
You can see it through the passenger fenderwell.
Engine coolan plugs aluminum chevy small block ls gen iii and gen iv small block lt gen v each not yet reviewed.