[White Bullet]

Originally Posted by ZR1Vette

If your reference to 'cross member' is this item>>>


then another item to look at is the mesh covered hose.

I would check the clamps (eg tighten) for the hose that goes from the water pump to thermostat housing... hose looks like this>>


Also would carefully inspect the hose itself (since it is mesh covered might be hiding a small defect).

I vote for the radiator but pressure testing is the way to go.

ZR1Vette, Nice detailed car !