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That's the result of a recent twin-engine marine project at Borowski Race Engines. Actual Borowski-built marine engines photographed in our shop. Big-block power, built for the water High-performance marine engines have to deliver more than an impressive peak number. They face long periods of sustained load, demanding cooling and operating conditions, and a very different duty cycle from a typical street car. Our approach starts with application-focused component selection, careful machining and assembly, and engine-dyno testing before the engines head for installation. This matching pair uses 548 cubic inches of Chevrolet big-block displacement and Whipple 3.8L supercharging, with custom blue-finished...

Boosted engines create higher cylinder pressures which in turn require greater clamping force to hold the cylinder heads down. At some level of boost, the OE fasteners will fail and that will be a bad day. Studs versus bolts is a separate discussion for a later date. For now, we will stick to reviewing studs as they are far superior as a fastener type. We will use the LS engine as an example.  Head stud upgrades to handle increasing boost can be summarized as “More”, “Better” & “Bigger” together with combinations thereof. "More" is going from an OE 4-bolt block...