Nothingbutdarts and Jrlegacy23 - there has got to be a reason that cavity is there? What does it connect to? Why is it so rusty? If its not needed why doesn't the intake manifold cap it off just like it does for the heat cross over? It's just open to dirt water ect...doesn't make any sense....I think I remember one time I ran a quarter mile race and it got up to temp and maybe a little high on temp on the return track and it seemed like there was coolant trying to boil out of there. Jrlegacy23 if it is not part of coolant passages....what is it part of?
The passage goes to NOTHING. If it has A/F in it you have a manifold or gasket leak! You would have to ask an old chrysler engineer why they put it there.
So I must have a cast crank based off the shape of that balancer? So if it is a cast crank it is internally balanced? I thought that was what the harmonic balancer was for? What would be different if you had a forged crank?
Yes, you have a CAST crank! Cast crank engines are externally balanced "From then Factory"
A forged crank is stronger and will take more horsepower and abuse with out breaking.
:D