Quote:
Originally Posted by GrabTheWheel
Unfortunately I don't have a stock baseline on the same dyno. 350 WHP on a mustang dyno is A LOT of power. I'm sure it feels amazing and the car doesn't feel like it's lacking, even in the torque department.
I don't want to upset the Rotrex guys (I use to be one) but the reality is the C38-81 will not make 400-500 WHP on a non hub dyno like many people on this forum claim it will. Maybe with a different cam and higher than stock compression?
The Rotrex feels great, makes cool sounds and mimics the stock power band in a very satisfying way. BUT if you are looking for BIG power it is not a good option even with the RS pulley on E85.
Rotrex touts itself as being the most "efficient" blower can someone please explain this to me? To me that would mean having the most power gains per PSI of boost. Obviously it will not keep up with a turbo and I don't think anyone expects it to. But I promise you that a TVS 1320 with 15 PSI on E85 will make a noticeable amount more power without any dip in power at the top end and plenty of torque down low.
The consensus on this forum that the Rotrex is best for track and the TVS is best for the street just doesn't make sense to me. To me the TVS is clearly the better choice for AutoX and I believe it will out perform the Rotrex on track as well. If you want a car that sounds cool, feels like you're boosted and keeps the stock powerband then go Rotrex. If you want torque and to feel like you have a strong V6 in the car with near silent operation go TVS. The Rotrex is the least likely to blow a stock motor but that's simply because it makes less power as you move away from the CARB setup compared to Edelbrock and Harrop.
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I completely agree. Unlikely any chassis dyno is gonna show +400 with a C38-81 RS setup. I definitely chose the C38 kit because I originally ran it on stock motor 93 fuel and it was my daily at the time so i wanted the low torque for extra precaution. Even though its perfectly possible to hurt the valvetrain with a rotrex but atleast I wasnt going to bend a rod by any means (not with a good tune anyway). I will look into a turbo kit maybe in a year or two to push the built motor a little harder. But in the meantime the RS setup feels fantastic and should be very reliable with the motor build/power levels. In the back of my mind though Im curious how a C38-91 or even the C38R would feel with a small pulley. Just isnt worth spending the +2300$ that those superchargers cost when a 4500$ JDL 3076r kit can make 500hp.