GM Service Manual Online
For 1990-2009 cars only

Engine Code

Engine Size

High Flow

Pressure Relief

Liters Per Minute

Gallons Per Minute

kPa

PSI

For 370 vehicles with LL8

4.2L

9.1/10.6

3.1/3.5

7585/8274

1500/1600

For 360 vehicles with LL8

4.2L

10.2/11.7

2.7/3.1

10342/11031

1500/1600