Pinion angle and drive train alignment

[z0sick]

Need a little help here setting up car. There is a lot of information out there and some of it contradicts others. Here is what I have:

Engine/Trans is at 4* tail shaft down...


Drive shaft is perfectly 0*...


Pinion is at 6.5* down...


Some sources say to only use the drive shaft and pinion while others say to throw the drive shaft out all together and use the tail shaft and pinion only. My opinion is that the tail shaft and pinion should be equal and opposite for a street driven car. (meaning that my tail shaft is pretty much fixed, so I need to angle the pinion UP 4*) this would put the center line of each parallel to one another. To me, this would reduce the vibration induced by the offset angles.

The other theory is that the drive shaft and pinion should have a -3* angle no matter the engine/trans angle.


What say you?