10 Best Automotive Performance Long Engine Blocks 2025

When it comes to automotive performance, every detail matters. That's why we've scoured the market to bring you the top 10 long engine blocks for your vehicle. After extensive research and testing, we found products ranging from a 7.9 score up to an impressive 9.9 score. At the top of our list is the Genuine GM Performance 19166393 Engine for Big Block Chevy. This engine block delivers unparalleled power and durability, making it a top choice for serious gearheads. And with the GM brand name behind it, you can trust that you're getting quality craftsmanship. Ready to take your vehicle's performance to the next level? Check out our full list of top 10 engine blocks now.