9 inch Rear/Original Rear

[1979Calais]

Here are some things to consider:

...your first link for the Lock-Right Locker is designed to be used in place of your current "spider gears" that are currently residing in your carrier unit. You will not have to swap axles (your stock axles are 26 spline) but you may be limited as to what gear ratio you can run since you will be keeping your factory carrier


...the posi unit and axles may cost more in the long run but it is probably a better longivity decision. With that posi carrier, you can run any gear higher than 3.23 ratio. Plus, the 28 spline axles are said to be superior in strength compared to the 26 spline axles.

So the 2nd and 3rd links is what I need and a set of 28 spline axles. Is there anything else I need to change out/ buy?

http://www.ebay.com/itm/Moser-Engineeri ... 5647c60550

 

[RITTER]

You will have to get your choice of ring & pinion "gear" set. You need to choose your ratio based on the type of driving the car will be in th majority of the time. The 3.73 ratio is one of the most popular ratios for the common street car :idea: If you are going to replace the axles you will need a rear end rebuild kit and c-clip eliminators are usually recommended with GM rear ends. And then of course your fluid and an aftermarket rear end cover (if you so desire)

 

[1979Calais]

You will have to get your choice of ring & pinion "gear" set. You need to choose your ratio based on the type of driving the car will be in th majority of the time. The 3.73 ratio is one of the most popular ratios for the common street car :idea: If you are going to replace the axles you will need a rear end rebuild kit and c-clip eliminators are usually recommended with GM rear ends. And then of course your fluid and an aftermarket rear end cover (if you so desire)

My uncle told me to get 3.73 ratio. I am looking for all the parts now, why my frame is being powder coated.

 

[1979Calais]

I just found a 9inch for the price I was going to pay to build a 7.5 rear. What gear ratio should I get with this rear?

9" Housing/Axle Package (G-Body)
- New Axles, Axle Bearings, Wheel Studs, & Retainers
- 31 Spline, 5 on 4-3/4" Bolt Pattern, 1/2" Studs
Center Section (Assembled)
- New 31 Spline Trac-Lock Posi
- New Motive Performance Gears (Choice of Ratio) Don't know yet (help)
- New Timken USA Bearings