| Re: cheap power improvements to the 425... It aint made for high end at all. A good exhaust system wouldn't be bad for the thing either. Torque comes from massive intake and low exhaust outlet. Fabricating bigger exhaust manifolds would make it awsome. New intake manifold too. Those two things and the car would run like a champ! The 472 is a much better engine, I'm sorry to say that though as an owner of a 425. |