"With the advent of the 6.4L HEMI truck engines, a thicker block was cast and used across the entire engine platform (that included 392 HEMI engine-powered cars and SUVs around 2017-2018). These blocks are known as “Big Gas Engine” or BGE for short. Both “BG” and/or “BGE” will be cast on the side and/or on the back of the block. These blocks might be hard to come by if you’re looking for a used 6.4L/392 HEMI engine, but their high nickel content, superior casting and slightly shorter water jacket (which provides increased cylinder wall rigidness/strength) are a huge bonus for serious horsepower engine builds."