We may use them on our 440. But, I have to be honest...... looking real hard at the Edelbrock, and even considering building the cast iron heads. We are looking to build around 475-500 hp, but gobs of torque and street manners. Not sure these SM heads I have are the right ones for our particular build. May sell them and dump the money into another set. Shhhhh.... even looking at E-streets. Seems they are a fantastic street heads and some great reviews and numbers being posted with these heads in heavy street vehicles.
