Driveline geometry help...

[BR3W CITY]

Where are you measuring from? -9 down would be kinda steep, you sure you're on a level plane?

[crazy longhorn]

Originally Posted by BR3W CITY

Where are you measuring from? -9 down would be kinda steep, you sure you're on a level plane?

2nd that....set the chassis level, then start the read? You should be 3-5 degrees on the engine/trans (closer to 3, if you can) read the rest of the angles, from there.... Longhorn

[FLYNAVY30]

The truck is sitting on the concrete slab in the garage, which I checked with a 3' level and is almost dead on. I used one of those dial indicators and set it on the top of the intake manifold (without the carb installed obviously) and got -9 degrees. The only thing that I can think of is that those tubular CPP mounts sit a little higher than the factory pieces? That being said, the front is riding a bit high as the weight savings from the aluminum LS motor replacing the iron big block. I suppose the best way to do this is to level the truck on jack stands on the frame, and measure from there, that way you take the suspension out of the equation?

Thanks for the input!

[BR3W CITY]

Originally Posted by FLYNAVY30

I suppose the best way to do this is to level the truck on jack stands on the frame, and measure from there, that way you take the suspension out of the equation?

Thanks for the input!

Not the best way, the only way that works! Suspension, wheels and tires, changes to frame or dropmember etc....all that stuff will take away any hope of an accurate reading with the truck on the ground.

Level it on stands, then try your measurement from the manifold again. I did it off the valley, but as long as the intake is square/level, it should be ok to measure from there.