That would be -4.5, or so I thought. If memory serves me correct the maximum you want for the street is -7 and max for the track is -10.
that's actually the working angle of the u-joint.
Another +1 for HardShift.
We have a HardShift TH350 that's lived behind 5 years of BBC abuse.
Hard Shift Transmissions,
12045 Johnstown Utica Road
Johnstown, OH 43031-9562
Phone: (740) 967-2218