What's the deal with using aluminum rods and being told you should use a brake with clean neutral? Getting ready to build a trans (T-400). Do I need an aluminum drum and a trans brake with clean neutral? Why do some say you should with aluminum rods? Approx. 725hp/ 650 ft. lbs. naturally aspirated. 3400lb car (for now). Plans on making it lighter and adding more power later. Eventual goal is deep in the 9's so I want to plan for future and build the trans I need for the future, now.