Before and After Comparison of 365 GTS/4 Engine Performance

This dyno graph compares the as-delivered power and torque of the Ferrari 365 GTS/4 engine with engine after rebuild by Carobu Engineering.  The Carobu-built, stock-spec Daytona engine made over 377 bhp @ 6700 and over 340 lb-ft @ 4300 rpm as compared with 334 bhp @ 6500 rpm and 315 lb-ft of torque @ 4400 rpm, a 10% increase in peak power.