Setting up Transmission angle (LS1 related).

[Payton King]

I will slow down and try to give you a better description. With you car on jack stands or with the subframe out of the car...it does not matter. Put your angle finder on the arms. What you are trying to do is get a reference point. If while on the stands you subframe is pointing down 1 degree..add that to the 3 degrees that you want to achieve on the trans. So when you put the finder on the back of the trans, I found it easier to put it on the harmonic balancer (larger, flatter surface and the magnet will stick to it) You are looking for a total of 4 degrees of angle. The 3 down plus the 1 down from the sub frame. Get the point?

Once the car is together, you can check your pinion angle. You have already used the arms of the sub to set the trans angle to 3 degrees. With the rear at ride height take get the angle from the sub again and add or subtract that number depending on how your car is sitting, with the 3 degrees up angle you want on the rear pinion. It is best to have them equal..3 up on the rear and 3 down on the trans, but there is a small fudge factor. If you are running a rear set up for a first gen and leafs I am sure you will not need to do anything to the rear, it will be close to the 3 degrees up.

Shimming the rear is an old drag racer trick instead of having to re-weld the spring perches.