90 5.0 Do these engines have coolant drain plugs on the engine block that need to be drained during a cooling system flush? Thanks

 

No. Just flush the entire system with water or use a flush additive. If you want you can flush the heating system independant by removing the heater hoses.

The block will flush fine and depending on how ambitious you are....pull the thermostat too.

The only plugs in the block are freeze plugs.

Bob

 

Thank you Bob for the info