[millennium200]

I have only had my replica a little over 30 days however the first 8 days my wife and I drove a little over 3500 miles. Execept for a cracked distributor cap my 514 ran great. The engine does have a Preformer RPM intake with a Holley 850. The cam is stock and seems to run great and make all the noises a cobra should make. I am in the process of adjusting the valves which I understand will need to be done at 3000 to 5000 miles. As for the valve springs I plan to run them untill the engine tells me to change them, which I expect to be once a year or so. If I planed to go over 6000 RPM a lot they might have to be changed more often, But I really do not plan to rev that high very often. If I were to change cams it would be to move the power band down about 1000rpm not because of excessive lift.