1990 2.3l valve clatter......wow

[tomw]

While out, it may be easier to remove the timing belt and inspect the cam bearings. Using a wrench, you may be able to tell whether they have been cooked or not by resistance to rotation. You will feel the valve spring pressure as you rotate, but between springs, if the cam rotates smoothly, you will likely be ok.
I think it would be easier to R&R the cam with the engine out rather than try to avoid punching a hole in the radiator, etc, when it is back in the truck. If you find it bad, you can do all the work without leaning over the fenders or radiator support. In short, I'd do any work with the engine out rather than wait and be surprised.
tom

 

[Kenneth S]

Since you have the engine out I'd look at the main/rod bearings also, and probably replace them along with the front/rear main seals.

 

[Dan B.]

It's done and running like a champ. Got a new tube, pump, gasket and aux shaft delivered from advance auto for $81. I think the motor is quieter now that it was before. It's ready for racing now.......Amish buggies all over Indiana county had better watch out!!

 

[Mark_88]

Haha...good to hear you are still in the race competition...those buggies can blow the doors off a wonky 2.3!