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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
I've seenmost people on here say that the stock 302 block is good for about 400hp. So I would expect somewhere around there from people with stroked motors.
When I dyno'd my 91 stock it made 208hp at the wheels and 291 ft. lbs. with stock 3.08's. When I built the engine the first time, with an e303 cam and AFR heads, etc.it shot up to 292hp and 353ft. lbs. to the wheels. With some messaging of the heads, custom ground cam, more fuel,and a custom tune, I have seen as much as 327hp and 366ft. lb. at the wheels. This with a new 302 all forged internals and 10:1 CR. All the normal bolt on's.
The new engine going in my 94 Well lets just say it's going to be a fun car.