Mercury Racing

Mercury Marine wants to put a greater emphasis on high-performance car engines in the near term, and if the 7.0-liter SB4 crate engine is any indication of the company's future, then sign us up. The SB4 crate engine is based on General Motors' LS7 7.0-liter V-8, which last did duty in the fifth-generation Camaro's Z/28 model. However, Mercury Racing, the company's automotive engine division, only uses the LS7's block and designed its own aluminum dual-overhead cam heads—oh yes, a DOHC LS7. With the new heads, the SB4 engine makes 750 horsepower and 570 pound-feet of torque. Did we...