Hi Keith,
About the only for sure way to do this is to add approximate weight to
your frame, and see where you are. As Mike advised, Too many variables
between trucks to do it any other way.
This snip from an earlier post says it about right. I messed up and didn't
keep the credits with it, so I can't identify the author, but he's out here
somewhere!
Kevin P.
'59 Apache 38/NAPCO (((We were all locked up in the truck, but my dog passed
gas... The air scrubbers weren't that good so I decided that I'd ruff
it! --Smile!--) Happy New year!)))
I just checked the clock. It realLy is!! We're Alive!!!! Yeeehaw!!!!!
<<<<
> I understand that's important to make the driveshaft to transmission angle
> match the driveshaft to pinion angle. What's the theory here? Why does it
> cause so much grief if the pinion angle is out of whack?
> As far as the angles go, the "theory" is that if the tranny yoke and the
>pinion yoke are at different angle, harmonic vibration will occur, because
if
>they are at different angles, then the u-joints needles will rotate at a
>faster/slower rate than the other ones.
> Now, I'm not to concerned with an exact setting, reason is, you can't
take
>into account all the different load heights that you car/truck will be in.
>Think about it, solo driver, driver and passengers, full tank of gas, empty
>tank, load in the back, no load, etc, plus all the combinations of any of
>them.
> When I set a rearend in, I put 250lbs in the front seat to account for me
>and tools and junk, and 100lbs in the bed, measure the tranny angle, and
try
>to get close to that on the rear, within a degree.
>>>>
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