915 or 930 trans?

[Lensart]

Hi, we are building a track only car and I would like to know what you guys think would be the best trans for our car. Mild turbo (400-450hp) engine. Either a 930 w/lower ring gear or try to build my 915 to take the abuse. Budget is allways a consideration.
Thank you, Randy

[cstreit]

For general reliability, 400-450HP is really pushing it on the 915. I know it's been done, but the 930 trans becomes a no-brainer for this application in my mind.