C and K engine breakdown 4.3L 1-6-5-4-3-2 Oil Pressure - at 1,000 RPM 42 kPa 6 psi Oil Pressure - at 2,000 RPM 125 kPa 18 psi Oil Pressure - at 4,000 RPM 166 kPa 24 psi 4.8L 1-8-7-2-6-5-4-3 5.3L 1-8-7-2-6-5-4-3 6.0L 1-8-7-2-6-5-4-3 included engines LR4 VIN V LM7 VIN T LQ4 VIN U L59 VIN Z LQ9 VIN N 6.6L LB7 1-2-7-8-4-5-6-3 6.6L LLY 1-2-7-8-4-5-6-3 with Filter 10 qt 9.5 L without Filter 9.2 qt 8.7 L Oil Pressure - Minimum- Hot - at idle 98 KPa 14 psi Oil Pressure - Minimum - 1800 RPM 294 KPa 42 psi 8.1L 1-8-7-2-6-5-4-3