429244

I see this "Phase 3 Supercharger 4.6L-3V Calibrated 625 HP" advertised in some Mustang magazines. Where can I get more info on these kits? Is it on Roush's website?
Thanks.
429244

Kyle@ROUSH

It appears you've seen an outdated advertisement. If you have a manual transmission you can get the Phase 1 TVS kit making 475HP/435Ft Lbs or the Phase 2 TVS kit making 550 HP / 500 Ft Lbs.


If you have an automatic you would be limited to the M90 Supercharger kit which is 435 HP / 400 Ft Lbs

If it was me I'd go with the the Phase 1 TVS kit if you have manual transmission. Let me know if you have any specific questions. Click the horsepower numbers for a link to the product.

429244

Thanks for the information. Why would you opt for the Phase 1 kit instead of the Phase 2 kit for a manual transmission car?
The most recent ad is in the April 2015 issue of Muscle Mustangs & Fast Fords.

Kyle@ROUSH

It depends really. The Phase 2 is the limit of what we would suggest being safe. Given those cars are around 10 years old now a lot of them have higher miles etc. The good thing is you're never stuck at Phase 1 so should you build your motor later on or decide you just feel it will handle the power you can always get the Phase 1 to Phase 2 upgrade kit. For an older car with a stock bottom end we generally suggest the Phase 1 TVS.