Heres a paraphrase of a combination of my Haynes Manual, pesonal experience, and professional advice: Allow to warm up for a few minutes to chech for leaks, making sure to keep between 1500 and 2000 RPMs if you are putting a new cam in for proper oil pressure, as soon as possible (no more than 5 minutes) drive it doing full throttle pulls from 30 to 50mph, closing the throttle all the way afterwards to decelerate, do this 10-12 times, and always make sure you keep the RPMs at least at 1500 for cam break in for the first 20 minutes. After that drive the next 500 miles gently and vary the speed when it is possible. I did this by doing a 300 mile drive on an engine with less than 100 miles on it (scary) and going between 4th and 5th gear and varying my speed from 55-65mph. After 500 miles change the oil and start to drive normally (think normal person "normal"). Then change the oil at 2000 miles and consider the engine broken in (so go ahead and do those 7000RPM pulls lol). The crutial thing is the first 20 minutes because you cant let it idle too low with a new cam, but you should also have a load on it, and probably keep it between 1500 and 3500RPMs. However I have heard varied reports about when to use synthetic. DO NOT use it for the first 500 miles because then therings will likely not seat right, but I have been told to wait until there are 5000 miles on the engine, which sounds high to me. So does anyone know when I can go synthetic? I have 2000 miles on it now, so I hope soon.
