Little update.
I have been driving the truck on & off for sometime now and the over drive works great.
The 300 likes to pull at a low RPM so even at 45 MPH I have been using OD.
I also lowered the rod into the jet and have run a few tanks since then just have not figured out the MPG yet but I don't think it is much better than before.
Today with help from my son we got the air fuel ratio meter installed but have not driven the truck other than to move in from outside my garage into the house garage. It is reading so I guess that is a good thing.
I have my monthly eye injection tomorrow and after a little rest I will see about taking the truck out for a spin to see when the AFR is. Before I do that I want to check the timing now that I have a light that should work in day light LOL. I am still getting a little spark knock and need to fix that before something bad happens.
Dave ----
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