4 bolt main vs 2 bolt - Which one do you actually need?
If you're standing in a machine shop staring at a bare block, the 4 bolt main vs 2 bolt debate is likely the first thing on your mind. It's one of those classic gearhead arguments that has been happening over greasy engine stands for decades. Everyone wants the "stronger" parts, but in the world of engine building, stronger doesn't always mean better for your specific goals. Choosing between these two setups isn't just about counting holes in a main cap; it's about understanding where your engine is going to live—on the street, at the drag strip, or somewhere in between. ...