[OmarGC]

Originally Posted by CSG Mike

Stock kits:
JR impeller speed @7400: 7400x1.29x9.49 = 90,591 rpm = 90.6% rated capacity
KW impeller speed @7800: 7800x1.33x9.49 = 98,696 rpm (KW's tune redlines at 7800) = 98.7% rated capacity
Vortech impeller speed @7400 : 41,588 rpm = 83.2% rated capacity

Kits as pictured in graphs:
Jackson Racing: 90.6% - 90,591 rpm (100k max)
Kraftwerks: 93.4% - 93,401 rpm (100k max)
Vortech: 86.0% - 43,022 rpm (50k max)

Bottom %'s are what you should be more focused on.