How to setup correct Pinion Angle?

[Vandals909]

My suspension kit from Ridetech should be in soon. I plan to install it and then set in my motor and transmission.

I have a 71c10 and I have engine stands from a 73 c20 (believe to be the same frame stand ECE uses) and using dirty dingo Sliders
http://www.dirtydingo.com/shop/produ...oducts_id=1308

I currently have a stock trans-member. I will need a new one piece driveshaft made for the Ridetech coil over trailing arm cross-member as my truck was originally a long bed and had a 2 piece drive shaft. The Ridetech trailing arm member requires a one piece driveshaft.

So with me running a lq4/4l80E combo in my 71 with dirty dingo sliders which use a clamb-shell. What is the best way to setup and check the pinion angle? Should I use my stock trans-member or aftermarket?

Sorry for the long winded post.

[Vandals909]

I found this thread with some great info.

Should the measurements all be done with the chassis bearing its own weight?


See post 17 http://67-72chevytrucks.com/vboard/s...d.php?t=569350

[knomadd]

You should have your truck sitting on it's own weight at ride height when taking measurements for angle and when measuring for the new driveshaft. That is where it will ride, and your angles will be most frequently seen. make sure you have opposite angles at the transmission tail shaft and pinion.

If you have 3 degrees down at the trans, you'll want 3 degrees up on the pinion of the rear end (parallel lines).

Here's a cool video that talks about the importance of driveshaft angle and phasing.

https://www.youtube.com/watch?v=Idk3BVDVHq4