What rear end do I have?

[HemiD@rt]

Here are a couple pics. Not sure what rear end it is. Thanks!

 

[Bad Sport]

8 3/4 489 center section.

 

[Princess Valiant]

a good one ....489 casting third member is very nice

 

[HemiD@rt]

Good to hear. Thanks guys.

 

[HemiD@rt]

How much abuse can I throw at this axle? I'm putting a supercharged hemi in the dart.

 

[66plyValiant]

How much abuse can I throw at this axle? I'm putting a supercharged hemi in the dart.

most likely anything you want to throw at it; the only thing stronger is a Dana 60

 

[1970Duster]

most likely anything you want to throw at it; the only thing stronger is a Dana 60

Actually there is stronger, it's called a Rockwell. That said if you break a Dana 60 you to run not walk away from cars!

 

[cosgig]

Which Hemi and how much HP will you be running. This will not hold up to a 426 style Hemi that is supercharged!! If it is a new gen Hemi, it will last!! Geof

 

[HemiD@rt]

Here is the engine.

Here is the Dyno graph of the motor when it was in my ram. It put down 520wrhp and 545wrtq through the rfe545 on a torque converter on its way out.

 

[fishy68]

The cars weight and traction have a tremendous affect on how much power a rearend can handle. If ya put street radials on it it'll never hook up good enough to break anything but if you run slicks it's kinda on the edge with your power. One of the few drawbacks to a 489 was the crush sleeve they used. If you have it replaced with a solid spacer it'll help it stay together.

 

[74DartSwinger360]

where is a good place to get the solid spacer?

 

[d55dave]

If you are running an auto without a trans brake it will also last better. A trans brake or hard launch with a standard plus slicks and its days will be numbered, especially with a tired 40 plus year old factory gearset and sure grip. The crush sleeve - Cas at Dr. Diff.

 

[d55dave]

http://www.doctordiff.com/