How much power can a stock 7.5″ rear take?
If you’re hooking up well (for example, using slicks and getting low 60′ times in the 1/4 mile), people seem to agree on 300 rwhp. After that, start looking at aftermarket 12 bolt or 9″ or similar rears. Don’t get an S-10 rear thinking it will be stronger because it probably won’t be. Also, people with Camaros making just over this much power break rear ends, so don’t look too hard in that direction either. If you’re making much more than 300 rwhp, you deserve a custom rear anyway. 🙂 Don Hardy 12-bolts seem to be popular. If you’re not hooking up, then it almost doesn’t matter how much HP you drive through the rear end because you’re just spinning the tires anyway!