The foundation for Max Effort’s engine is Dart’s virgin 355-T61 aluminum block. The block uses scalloped outer water jacket walls to improve coolant flow around the cylinders to ward off detonation and promote consistent cylinder temperatures when run at extended high rpm. On top of that, the upgraded oiling system features a complete stock-type system, plus a low-restriction priority main oiling system with front and rear external oil pump feeds. Both of those benefits are especially important when on track. The block’s light weight will take important pounds off the nose to help make up for Max Effort’s heavy hideaway headlights.