Customs Axle Swap Pinon Angle before Nailing it In

just swapped a Ford 8.8 into my 1950 Plymouth. I have a set of ladder bars I installed also,for more leaf spring support. I have my Trans angle sloping 7 degrees, my rear pinion points up 4 degrees, my driveshaft is at a 3 degree slope down. I set the rear pinon at 4 up to take into consideration of the axle to turn upwards a tad with accelation. Is this setup gonna work, thanks for your input. 383 stroker, 450 horse, 700r4 trans Ford 8.8 rear

 

Make the tail shaft and the pinion lay at the same angle. You are not going to get much spring wrap if any with ladder bars. You did use floaters on the rear right?

 

yeah,we got floaters

 

If you run at 7º, you may experience vibration at freeway speeds.

I would bring the transmission up to 3º, and set the rear there too.

 

3 down trans-3up rear.

 

If you have a smartphone, Tremec has an app that you can use to set the pinion angle with, it's a slick app.

 

This will complicate it for sure. I've got a double CARDEN JOINT (2 u joints) for my front u joint because I run steep angles.
I was told to match the pinion angle to the driveshaft angle. Does this sound right?
Engine / Transmission is negative downhill 4 degrees. The driveshaft is 1/2 degree uphill currently and I've got a harmonic vibration.
That would tell me the rear-end pinion ought to sit at ????

 

With a CV shaft like yours the pinion angle should match the driveshaft angle. If not you will have a vibration.

Here's what it looks like on my Jeep.



Not a monster truck though.

 

Da Tinman.....Yes that explains clearly what other folks told me.
I'm going to attack it this week and try matching the driveshaft inclination angle.