A "new" turbo option for those of you want a GT47-88 but have physical size limits...
#21
TECH Senior Member
iTrader: (21)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
First the turbine wheel is larger....96mm vs 92, and the compressor cover difuser space is almost .5" larger which the S88 and S91 are within .05" of a full frame unit. Part of the reason why they don't suffer as much. Also the BW's use a larger diameter backing plate.
Kyle
#24
#26
LS1Tech Sponsor
iTrader: (10)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Keep on arguing the point all you guys want. A full out 42 frame vs. a full out s400 frame and the BW unit will own! Thats that, take the best and bolt on the other and you will see. On a smaller cube motor its not such a huge issue. Get above 300 cubes and you will see.