[bp67chevelle]

hi pulled the motor from a 92 chevy pickup, i think it has a crank sensor in a freeze plug on the left side of motor. the block i was going to use didnt have one. the block is a mid 70's will this block work or do i need a differnt block. any help would be great thanks

[evolvo]

Not a crank sensor, sounds like a knock sensor to me.

[LATECH]

If the device you are alikng about is installed where a block plug ( freezeplug- welch plug) should be, that would be a block heater for a car that lived up north in the cold climate. It keeps the engine warmer overnight in frigid temps to help it start easier in the morning.
Knock sensors will be installed where a pipe plug style plug should be, and it does go into the coolant as well, so use a little teflon sealer when installing
Block heaters will have 2 wires, and should have a plug in lookin thing for a receptacle. A knock sensor has a one wire connector and looks kinda like a top that a kid would play with