how much hp will a 8.8 hold?

66dartman said
The late model mustang boys use that rear and there are parts to eliminate the c clip axles. The tubes have been known to spin in the third member. The only advantage is that they are available and cheaper than an 8-3/4, but 350 hp is about all you would want to push through a stock one, even that is on the edge.

The 8.8 is one strong unit. A buddy of mine has a Mustang that runs 9.30's with a 1.38 60' time with an 8.8. He launches the car off a trans brake so he hits the rear end hard. He uses Strange 30 spline axles and a spool but plans on going back to a dif for next year when he swaps from a supercharged 347 to a nitrous feed 408.