Yeah, it’s firing on all 6. I just tuned it up and double checked everything.
I read there is a cast crank slant and a forged crank. Could that be an issue?
The cranks will not interchange with their respective blocks. But as far as I know all the balancers, flywheels and flex plates are interchangeable. Maybe @slantsixdan will come in and verify this. I am almost 100% certain this is correct. I tagged him, so give him a little bit. He'll chime in.
I left one thing out. The flex plates and flywheels and converters are not interchangeable between early and later models. I forget where the split is. It has to do with the size of the crank register. I am sure Dan will enlighten us about that as well.
