where to run battery neg cable with aluminum heads

When using aluminum heads do I still run the battery negative cable to the heads or must I now ground at the engine block?

Allen

 

Last time I checked Aluminum conducts electricity, I don't why you couldn't do that.:TU:

 

Nothing to worry about. Aluminum is a much better conductor of electricity compared to iron.

Devon

 

Stock mounting locatiion on a non AC car was to the aluminum alternator bracket. I guess Buick thought aluminum was good enough. Besides the aluminum heads are a hell of alot more dense than the alt. bracket.