The Exorcist packs the same 6.2 - liter supercharged LT4 V - 8 as the regular ZL1, but thanks to larger supercharger, upgraded intercooler, ported factory heads, aggressive camshaft, longtube headers, bigger intake system, and reworked ECU, the LT4 now puts out an additional 350 hp and 316 lb - ft of torque for a claimed total of 1,000 hp and 966 lb - ft of torque. (automobilemag.com)
Anyway, Ferrari treats each bank like a separate I - 4 engine with its own intake plenum, so UDDU works better; Ford has one big intake plenum for the whole engine, which the UDUD crank serves better in terms of airflow. (automobilemag.com)
Sodium - filled exhaust valves and piston oil squirters helped keep the new engine ticking, and bigger intake valves and more aggressive timing and lift helped it breathe. (automobilemag.com)