I've seen a thread like this before, but it didn't really answer my question. I have a 78 440 that will have a forged Eagle 520 stroker crank. Does that mean it will be internally balanced? I'm looking to buy a flex plate and converter but don't know the balancing.

 

I've never seen a stroker kit that was not internally balanced. Did the kit come balanced?

 

It's for internal balance but it needs professional machine shop balancing. So I guess it internal

 

I would contact the mfg /sell of the crank.. and inquire