Help! Pinion / drivetrain angle

[Jim Wintz]

I am in the process of setting up my drivetrain in my Cobra. I have been researching information on pinion, drive shaft and drivetrain angle and still have a few questions I hope you guys can help with.

I am stting my engine at 3 degrees, with the tranny heading down. This seems to be pretty generic in everything I have read.

I am running an 8.8. IRS so I don't think a lot of the pinion angle information applies as the rear end will not roll like a leaf spring to 4 link type set up.

This is where my confusion starts.
Most state to have the rear end at a slight downward angle with the front of the rear end angled down to allow it to roll up under acceleration and hope to align closer to parallel with the tranny. Most state about 2 to 5 degrees with the front of the rear end angled down. With an IRS I did not think I would need this much, I was thinking about setting it at 1 degree down in front. This would result in the center of the tranny tail about 1/2 inch higher then the center of the rear, allowing for a slight downward angle of the driveshaft. My other confusion is in the information saying that the angle of the tranny and the rear end should be parallel but not intersecting. If I did this the front of the rear end at the yoke would be going up about 3 degrees. This does not agree with the info stating the front of the rear end should be angled down to allow for the slight roll.

I hope this makes sense, if anyone has any information or answers it sure will help me in attempting to get my drivetrain all aligned properly. Thanks in advance for all of the help and responce I hope to get.

Jim