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Sounds more real.

Camshafts and rockers:

Since the Corolla uses adjustable rockers, it's very easy to take your cam to any cam regrind shop and have them regrind any profile you want. Basically, the amount of lift is power, the amount of duration is at what RPM you want the power to be at. The cam timing is at what RPM you want the torque to be at. Offset woodruff keys can change your cam timing. This is a very complicated subject that is best left to the cam experts. Check out Elgin Cam's web site, as he explains a lot of this theory. You can send your cam to Elgin or other cam shop and explain to them what you want. They will need to know everything about your motor and its intended use. Be careful not to get too enthusiastic. If you go for a totally wild long duration high lift cam, you will have to worry about piston/valve contact, it will be difficult to start the engine, and it will have 5-10 MPG driving around town, etc. I recommend to stay mild unless this is used for race only.

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