Complex sentence: The FB has an all new block and head featuring dual overhead cams with intake and exhaust variable valve timing (AVCS-Active Valve Control System), and a timing chain that replaced the timing belt.
Split into simpler sentences: The FB has an all new block and head. It has DOHC, with intake and exhaust variable valve timing (AVCS-Active Valve Control System), and a timing chain that replaced the timing belt.