Depends on the engine
220 horsepower for the high output 5.0 ( 302 cubic inch ) in a 1989 Ford Mustang ( the 8th " character " of the VIN is an " E " )
The horsepower in the 1988 Ford Mustang 5.0 was 225 horsepower
I believe that is ( 220 horsepower ) for the High Output 5.0 liter / 302 cubic inch V8 in a 1989 Ford Mustang GT
The V6 - 2000 Ford Mustang is 190 horsepower
220 horsepower
In a 1989 Ford Mustang GT : The 5.0 liter High Output V8 engine is rated at : ( 220 horsepower from the factory ) according to my Chilton's Auto Repair Manual
The stock engine, a 5.0 or in reality a 4.9 liter had approx 225 horsepower.
The 2000 Ford Mustang GT was rated at 260-horsepower
2001 Ford Mustang : GT , 260 horsepower Bulitt , 265 horsepower Cobra , 320 horsepower
The 1996 Ford Mustang GT was rated at 215 horsepower
The 2003 Ford Mustang was rated at 190-horsepower
The 1986 Ford Mustang 3.8 liter engine was rated at 120-horsepower