[KingLT1]

It depends on the power goals...There is a point when larger isn't better for the intended application and I don't really see the 3100 being much of an advantage under 1000whp compared to a 2650. The 2650 was a significant difference over the 2300 once above 750whp because the 2300 starts to create more heat and lose efficiency. If you had both the 2300 and 2650 pullied for 7psi, the 2300 would likely be better. The 3100 would be even worse because it would be spinning so slow it wouldn't make any power under the curve. For somebody like Mike Swanson, yes the 3100 is likely going to be an improvement.