As stated before it will be 310ci. The compression will determine the hp out as well as heads, a major factor, cam, intake setup. U didnt spec if it was efi or carb. Hope this helps post again with your specs. im currently building a 302 as we speak so feel free to ask anything.
Randy
A ford 302/5.0 will be 306ci if bored .030 (4.030" bore)
Ok not sure on what HP your 306 would make. My Ford 302 Bored .30 over (306) is making 397 WHP with 7.5 lbs of Boost from a Procharger. Mustang 5.0 V8 302 1989.
302
Horsepower TV - 2006 Horsepower's Blue Oval 302 was released on: USA: March 2010
220 horsepower for the high output 302 in a 1988 Ford Mustang
220 horsepower
347 stroker is a 302, bored .030 over with a .400" long crank. 302= 4 x 3 inch 347= 4.03 x 3.4inch
My 1991 Ford Mustang LX 5.0 L ( 302 ) was rated at 225 horsepower
225 horsepower
141 horsepower
205 horsepower
225 Horsepower.