The MS.45 is the proven GM 6.0L engine with over a decade of outstanding performance, reliability and durability. Redesigned from the ground up in 2020, the MS.45 is stronger than ever.
Specs
Emission Certified
Model: MS.45
Displacement: 6.0L HO
Horsepower: 450 @ 5600 RPM 
Torque 450 @ 4000 RPM
Fuel System: Multi-port EFI