modified firing order big block
Not factory. You are probably thinking of the old Mopar "High n Mighty."
Any engine can be set up with something like dual throat webers, that is if you can get an intake or build one to fit them---- to provide a barrel for each cylinder, and nowadays, some are modifying older Hillborn/ Enderle injection for EFI. That with individual header tubes in effect creates 8 separately tunable independent engines, but of course exhaust systems are a "little tough" and many race classes require collector headers and or an exhaust system.
Not factory. You are probably thinking of the old Mopar "High n Mighty."
Any engine can be set up with something like dual throat webers, that is if you can get an intake or build one to fit them---- to provide a barrel for each cylinder, and nowadays, some are modifying older Hillborn/ Enderle injection for EFI. That with individual header tubes in effect creates 8 separately tunable independent engines, but of course exhaust systems are a "little tough" and many race classes require collector headers and or an exhaust system.