usually between 160 and 195 degrees.
At the rear of the engine on the passenger side is the filler tube and dipstick,
5x4.75
300
Remove the crankcase breather cap up in front of the engine and add motor oil down the tube.
66 Impala bolt pattern is 5X4 3/4
Assuming this is a V-8 engine, the fuel pump is bolted to the passenger front side of the engine. Follow the fuel line from the carb, it will lead right to it.
It has a full perimeter frame.
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