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Old 05-17-2015, 01:02 AM   #10
BR3W CITY
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Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: driveshaft options

Quote:
Originally Posted by Liltroy View Post
Thanks bro. I think I need to find someone who has the 4l80 and see if they'll take some measurements for me.
Any volunteers?
For your own good, NO.

Measuring DS length is something you HAVE to do yourself for two reasons.
1. there are too many small factors for us to give you an accurate ballpark based on what factors are known. Where exactly your engine mounts in the cradle alone can create a large disparity in DS sizing.

2. when/if you have any future issues with pinion, vibrations, slip yolk issues or any other DS related problem; you'll already have half the skills to troubleshoot it yourself.

For example; if you put the motor in, use our measurements from an existing swap, then find out you need a DRASTIC change in pinion angle...well shoot we just wasted your time and money with our measurements, since now you might bee too long or too short for the correct fit. Getting reference measurements from the forum is totally fine, and in most cases I'm all for it (especially when distance or weather prevent access to the truck)...but unfortunately DS length is something gotta tackle yourself. (that diy list includes DS length, pinion angle, backspacing, and ride height on a particular suspension)
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