Help! Pinion / drivetrain angle

[Jim Wintz]

Well, I did more thinking and then more changing.

I did not like having the front of the yoke pointing up to keep it parallel with the engine and tranny. My thought was that if there was any roll of the rear end housing the front of the yoke would go up further and possibly make the situation worse.

So what I did was I changed my engine and tranny angle to 2 degrees with the tranny going down. I then changed the rear end with the front of the yoke going down about .7 degrees, (almost one degree down). The center to center height from the tranny to the rear end is now 1/8 difference with the tranny being higher.

My thought is that this is a close combination of the different versions I have read about. One suggesting that both the tranny and rear end angles being the same but opposite, intersecting in the center of the drive shaft. My angles are pretty close to being with in 1 degree difference. Plus I think I am set pretty good if I get any rear end roll, say the rear end rolls up about 2 degrees or so, as I have read to set them anywhere from 3 to 7 degrees down to allow for this. Mine being an IRS should not roll that much, so I allowed for about a 2 degree roll. If this happens under acceleration give or take a degree I should then have the rear yoke pointing up 1 to 2 degrees under acceleration which then would have the rear end and engine / tranny running close to parallel. Which again I hear is a good set up.

Well now on to getting my driveshaft ordered and getting the car done so I can trial my theory on this set up. No matter what I feel they are set up pretty close and should not cause any serious issues.

PS: Also wanted to mention the the engine / tranny center to the rear end center is off set about 1/2 inch from side to side. Again I have read that this is also a good thing.

Thanks for the help. Anyone reviewing this please give me you input and thoughts on my set up. If I am way off base I would love to know sooner rather then later.

Jim