itel take a bit but u would have to gen different mounts and trans, new fuel system and exhaust and censors
It wouldn't be too bad a job if you used an older carbureted 350 and brought over the motor mounts and trans from the donor car. Might have to move the tail shaft mount to match the new trans, and the drive shaft would need to be replaced with a custom length. The electrical wouldn't be too bad either, but it would be easiest to switch the car to 12 volt rather than trying to find a 6 volt starter and mate a 6 volt generator to the alternator mounting. Also you can't run an HEI on 6 volt, so you'd have to convert to an older points-type distributor with remote coil.
You replace the engine.
The engine drain plug for 6 cylinder is on the lower left side of engine block.
Follow the main hose that goes from radiator to engine block. It is on engine block between the main hose connected to engine block and a pullye. The heat gauge wire is snapped on the sensor. Remove the wire and replace the sensor.
replace the engine with a small block chev
it is in front of the engine block under the water pump kinda low on the engine
Drain coolant from radiator and engine block Remove passenger's side rear freeze plug and replace with block heater kit
You have to pull tranny. it is sandwiched between that & block, but pretty straight forward.
It can be done but unless the block is rare or an antique, it isn't worth it. Buy a new or good used block to replace the cracked one.
Your engine block is the main part of your engine that holds the crankshaft and pistons internally. Your knock sensors, there are two, are screwed into the top of the engine block in the valley between the cylinder heads. You don't have to remove the engine block, you do have to remove the upper and lower intake manifolds to get to them. I changed the sensors in my 99 rx300, long day!
If its just the cord, then follow the old cord to the back side of the engine ( really the side of the engine closest to the firewall ) and replace it. When the engine is cold, plug it in and you will hear the block heater heating up. If you don't hear anything, then replace the heater also. That requires a little more knowledge.
That threaded nipple is removable, replace it.
You remove the engine block