Ended up doing both valve covers with gaskets and OCV seals. Since the intake was off I figured I'd upgrade the throttle body. I picked up an optimized 3.7L TB (73mm vs 63mm on the 3.0L) - with a broken throttle stop. I also have a stock 3.7L TB for parts.
Here R to L is 3.0L TB, stock 3.7L TB, tapered TB spacer/adapter.
Here is the optimized TB. The TB stop is broke off and stuck inside. The replacement is sitting on top.
The threads are plastic and has thread locker on it - it is not intended to be adjusted or serviced. Inside the plastic threads is a spring and plunger.
I carefully drill out the plastic without damaging the threads. Then use a tap to clean out the remaining plastic.
I apply thread sealer (not locker) and insert the new stop. It is adjusted such that when the butterfly is fully closed, the stop plunger is full depressed. Then we install the TPS from the 3.0L TB.
Install the manifold and TB.
Ready to make a couple more HP.:grin2:
CR