engine/tranny angle relative to rear diff.?

[denny03830]

The rear axle pinion and the transmission spline should be parallel. If the transmission spline is down by 3 degrees the rear axle pinion offset the same 3 degrees. You can also drop the pinion about 2 degrees more than the transmission, which makes the assumption that the torque of the engine will pull the pinion up about 2 degrees under power so the final angle will be back to parallel. The engine should not be level, if you put a angle finder on the valve covers the engine should slope down towards the firewall about 3 to 5 degrees.