Eaton M90 (03-04 cobra) on a 3valve...

[Viper_ed]

If you really want a screw supercharger, Whipple already makes one for the 3 valves.

[fourvalvegt]

If you really want a screw supercharger, Whipple already makes one for the 3 valves.

last i heard the eaton was a roots supercharger and the whipples and kenne bells were twin screws

[LSlayer]

last i heard the eaton was a roots supercharger and the whipples and kenne bells were twin screws

Correct. Stock Cobra, roush, and magnacharger are all Eaton-roots blowers, while Whipple, KB, and Saleen are Twin Screw blowers.

[fourvalvegt]

exactly they have different rotor designs