BBC Performer RPM 454-O Cylinder Head Assembled ECU 5 in Long - 12

5 in Long - 12 Point Head - ARP8740 - Chromoly - Natural - Set of 16 /

Helmet Shield - Anti-Fog - Dual Pane - 3 mm Thick - Dark Smoke - SRV-8 Style - BR8 Model Helmets - Each

Bulkhead Plate - Air Conditioning - 2 Port - One 6 AN Male - One 10 AN Male - Billet Aluminum - Polished - Each /

Valve Spring - Beehive Spring - 400 lb/in Spring Rate - 1

CAN bus for communication and setup management with MaxxECU MTune PC software

BBC Performer RPM 454-O Cylinder Head Assembled ECU 5 in Long - 12Cylinder Head Performer RPM High Compression Assembled 2. 190 1. 880 in Valve 290 cc Intake 100 cc Chamber 1. 550 in Springs Angle Plug Aluminum Big Block Chevy Each