Quote:
Originally Posted by pete57
Thanks, just what i was lookin for. Manifold is not removed so ill go off the other 2 locations. Should my angle be around 3 degrees at both the balancer and trans yolk?
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The actual engine/trans inclination angle is a reference value only and is only important in how it relates to obtaining optimized U-joint working angles.
You need to take three angular measurements in order to correctly calculate the U-joint working angles, which are the eng/trans inclination angle, the driveshaft angle and the rear end pinion angle with your truck chassis/suspension resting at its intended static ride height.
Once you have those three angles you can calculate the U-joint angles through basic subtraction or addition of the angles from one another based on their up/down disposition of each angle. If the eng/trans points down to the rear and the drive shaft also slopes down to the rear then you would take the engine/trans and driveshaft angles and subtract the lower of the two from the higher of the two to determine the front U-joint working angle.
The rear U-joint angle would be calculated the same way as long as the driveshaft and rear pinion both sloped down towards the rear of the truck (both downslope angles). If your driveshaft sloped down to the rear of the truck (down angle) and your pinion was tipped down towards the front of the truck (up angle) then you would add the driveshaft and pinion angles together to calculate the U-joint working angles instead of using subtraction.
Your goal should be to achieve U-joint working angles the are the same within 1/2 a degree and be a minimum of 1/2 a degree and no more than 3 degrees.