Trent, another thing to consider is this. A blower uses half it’s horsepower it produces just to make the power. So say your engine makes 500 n/a hp and if your blower makes an additional 300 hp for a grand total of 800hp, an additional 150 hp would be available except for the fact that it is used to turn the blower which is strapped onto the front of the crank. So in essence your crank is stressed as if it was producing 950 hp, rough calculations.

This is where the beauty of a turbo or nitrous comes in. It adds no stress to the crank to make that extra hp other than the hp you realize.

So, if you are using a blower, buy the crank that can handle the actual stress that it will be subject to.