The ignition is not fused.
Look on the drivers side hidden in the frame ur going to need two wrenches.
Any smallblock Chevy engine will physically "fit" into a 85 Impala
cut all the hoses and wires and hook a chain to it and rip it out.
1985 Chevrolet impala
It is at the rear of the engine and has the plug wires coming out of it.
5 X 4.75 (120.7) Bolt Pattern.....
in tanvirs but
The heater core on a 1985 Chevy Suburban is located under the dashboard on the passenger side of the vehicle. The glove compartment may have to be removed to access the heater core.
If it has overdrive it is most likely a 700R4 transmission, if it doesn't,it is most likely a 350 turbo.
The alternator is without enough power, unsure of what is needed or what shortcuts to take.
1985 CHEVY PICK-UP IS CARBURATED... THE FUEL FILTER IS LOCATED IN THE CARB.. BETWEEN THE FUEL FEED PIPE AND CARB. IT'S A PAPER TUBE STYE FILTER. GM# 7028281