1971 factory 318

rumblefish360 said
There all steel! LOL It is a forged crank. Mill hour heads down for cheap compression.

I totally doubt this has a forged crank, likely a 1 in 10 chance. My car's original, never been apart other than the oil pan 1970 318 has a cast crank. They started making them with cast cranks in 68 or 69.