8 3/4 swap

[Mopar Tim]

Just got 8 3/4 rear end with sure grip, 3 55 gears. How much shorter does drive shaft have to be from 7 1/4 that is in now. Actually im picking it up tomarrow:happy1::cheers:

 

[pntastar69]

Best to measure c/l to c/l of both yokes after the rear is installed, then subtract 1" for suspension travel.

 

[Gib Warnick]

Just got 8 3/4 rear end with sure grip, 3 55 gears. How much shorter does drive shaft have to be from 7 1/4 that is in now. Actually im picking it up tomarrow:happy1::cheers:

I recommend installing the rear and then take the car to the driveshaft shop and let them measure and then shorten it up
Remember to measure with the car sitting on the wheels

 

[Bad Sport]

Just got 8 3/4 rear end with sure grip, 3 55 gears. How much shorter does drive shaft have to be from 7 1/4 that is in now. Actually im picking it up tomorrow

Measure, measure, measure! Get the rear installed, set jack stands under the rear so the suspension is loaded.

Call a shop that you intend to use, ask THEM how they want it measured (from where to where). Take the DS to them and let them do their thing.

 

[Mopar Tim]

Measure, measure, measure! Get the rear installed, set jack stands under the rear so the suspension is loaded.

Call a shop that you intend to use, ask THEM how they want it measured (from where to where). Take the DS to them and let them do their thing.

Good advice Thanks. :color:MT

 

[Bad Sport]

Good advice Thanks. :color:MT

When I had mine shortened the shop actually asked for two measurements, and specific places to measure from and to.

I provided them with those two numbers and they hit it dead on.

 

[Tony Fields]

Measure, measure, measure! Get the rear installed, set jack stands under the rear so the suspension is loaded.

Call a shop that you intend to use, ask THEM how they want it measured (from where to where). Take the DS to them and let them do their thing.

^^^^^^^

What Bruce said.

 

[crackedback]

It'll be about 2.25" shorter.

Best to measure.