The engine block coolant drain plug on 4.3 liter Chevy Blazer is located on the bottom of the engine, near the oil filter. It allows coolant to be completely drained from the block during maintenance.
Yes.
in the engine block
yes
The GM 8.1 Litre engine is a 496 cubic inch big block motor.
there should be a numbered stamped on the rear of the engine
Inside the oil pan mounted to the engine block.
There are 6 bolts that hold the trans. to the engine block.
That would be a big block. If you are referring to the diesel engine, it is based on the Oldsmobile rocket block, and shares nothing with the engines usually referred to as big block or small block.
The crankshaft sensor shold be on the engine block about midway on the back side.
In the right upper side (passenger side) of engine block.
What grade of oil is best in your 5.3 liter Chevy engine?"