Looking for 8.5" 10 bolt rear end differential rebuild options

[Frank's-78-Z28]

Have a 8.5" 10 bolt rear end in my 78 Z28. Have 3.42 gears and plan to stay with this gear I think, but wanting to change to a limited slip. Planning to replace entire rear end package. Have rebuilt my engine to a stroker with an expected 425 hp.
Wanting some recommendations for typical street and occasional autocross driving. Who makes the best package for the money?

 

[camaro71/holland]

So you're keeping the gears and replacing the rest, right? Then it's time to step up to 30 spline axles.

You can order Moser axles along with the rest of the parts from Summit or Jags, but some vendors, like Dutchman axles, can set you up with their stuff as well.

For street/track you're probably better off with a clutch type unit from Eaton or Yukon. For track/street you can go with a helical unit like aTruetrack.

 

[big gear head]

I agree. For street and auto cross the 30 spline Truetrac is probably your best choice. Moser 30 spline axles are a direct fit without any modifications.

 

[Frank's-78-Z28]

Leaning towards the Eaton Detroit Trutrac. It looks like a great set-up.

 

[BonzoHansen]

I've been happy with my trutrack. I also did 30 spline axles

Weld the axle tubes!

 

[Zspoiler]

On my 1979 Z-28 with a 500 HP 377 cubic supercharged small block Chevy ,Super T-10 four speed ..I used my original housing .Moroso "Brute Strength" posi .30 spline Mosier axles .And a new set of Chevrolet 3:42 gears ,Since mine was an Turbo 350 car I changed over to a 4 speed .A Moroso rear cover Stud Girdle .And a local shop set it up.

 

[Frank's-78-Z28]

I've been happy with my trutrack. I also did 30 spline axles

Weld the axle tubes!

Bonzo, wanting to know more details about welding the axel tubes. Are you talking about welding the tubes where they insert to the 3rd member?

 

[Frank's-78-Z28]

Bonzo, wanting to know more details about welding the axel tubes. Are you talking about welding the tubes where they insert to the 3rd member?

Also what's the part number of your Trutrac 30 spline?

 

[camaro71/holland]

Bonzo, wanting to know more details about welding the axel tubes. Are you talking about welding the tubes where they insert to the 3rd member?

Welding the tubes:
http://www.nastyz28.com/forum/showthread.php?t=18890

 

[big gear head]

Be sure to look at post number 37 and 38 in that thread.