Saturday, October 1, 2011

What is the best hydraulic roller cam for a Chevy 383 street rod?

I am completely rebuilding a Chevy 383 motor from bare block and i wanted help on what is the best hydraulic cam that would take my motor all the way to the highest performance but still be able to drive it on the road because i want it really HOT but not just a strip car.|||There is no BEST camshaft for the SBC. The best camshaft would be the one that best fits your application.





Selecting the best camshaft for your application is almost a black art. Get it wrong and your high dollar engine is a dog. Get it right any you will be all smiles.





All camshafts are a compromise. They operate at their peak performance at a relatively narrow RPM range. A common mistake is to select a cam that is too hot for a street engine. For example you buy a cam that makes its best power in the 7000 RPM range. The problem is that how often do you run a street engine at 7000 RPM and for how long. You end up with an engine that performs like crap in the 3000 to 4000 RPM range and does really bad at the 2500 RPM range where your street engine runs 99.9% of the time.





The cam must also matched to the intake manifold and exhaust. These components are also tuned to operate best within a specific RPM range.





Other items that effect the camshaft selection are things like if you have an automatic or manual transmission, the differential gear ratio, the weight of the vehicle.





There is a program from Comp Cams called Cam Quest. You could use this program to help you. You fill in as many of the blanks as you can and the program will find the best cam for your application. You can even run your engine on a virtual Dyno to see how changes effect your engine. You don't necessarily have to buy their cam. You could use any cam with a similar grind from any other company. However their camshafts aren't bad.

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