How does cam timing affect power with the Whipple system? In other words, using an HP500 carbureted kit on a 540 ci engine(stock cast iron heads, 7.5:1 compression) , would it be better to stay with the stock HP500 cam timing or would using a blower specific cam make substantial gains in power? Does the blower move any air at idle speed to help smoth out a radical cam? Thanks for the advise.

no one has any input?

Harry,

There is a lot to be gained in camshaft design on the 500HP Carb engine, stock cam is certainly nothing special. If your going to a 540, the carb should be changed to a minimum 1050cfm. So if your building a 540 carb engine, you should change the camshaft to a much more aggressive cam design for the SC. The screw compressor will idle far better than any roots, so you can go very aggressive with the cam.

Thanks
Dustin

Hello shockwaveharry,
I have done some work with this set up and can tell you a cam is a big plus. pm for details

Thanks for the response.

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