Hmmm. You are on to something here. The hose that I have hooked up to that forward nipple has the other end connected to a L-fitting that is on the underside of the intake runner manifold. I will check tonight to see if that fitting is plumbed to coolant.

Thanks for all your time and effort on this one!

-Chris


'88 EFI Xtracab, 32 x 11.50 Buckshots, AZ bed, Turbo drivetrain.