rear axle advice

[BossHogg69]

Originally Posted by Captainfab

With that much hp/tq I would go with aftermarket axles. Of course the durability of the stock axles will be relative to the size and rubber compound of the rear tires you run. If you do go with aftermarket axles, you may as well narrow the housing a little to accommodate a wider tire and also weld on the correct Moser #7950 housing ends.

^^^
THIS - don't even mess with C-clip eliminators. Use the Ford Housing ends with GM bolt pattern - that is the correct Moser #, and then get axles from them too. I speak from experience here. I welded my tubes to the housing, narrowed the rear 2", used the Moser 7950 ends and Moser axles with a Moser diff cover/girdle with a Detroit trutrac. Didn't break a sweat taking 600hp. Now it's backing an 800hp Foxwell 532" motor, a modified TKO600 and RAM 10.5" dual disc clutch. I'll report back if anything breaks

[racecougar]

Originally Posted by BossHogg69

^^^
THIS - don't even mess with C-clip eliminators. Use the Ford Housing ends with GM bolt pattern - that is the correct Moser #, and then get axles from them too. I speak from experience here. I welded my tubes to the housing, narrowed the rear 2", used the Moser 7950 ends and Moser axles with a Moser diff cover/girdle with a Detroit trutrac. Didn't break a sweat taking 600hp. Now it's backing an 800hp Foxwell 532" motor, a modified TKO600 and RAM 10.5" dual disc clutch. I'll report back if anything breaks

I did much the same, though I narrowed mine 7" total (3.5" per side), and also installed studs in the housing for the carrier bearing caps.