The crank is of the same design with a 3/16" shorter stroke. The bore is only 3-9/16" So its hard to get any big inches out of it. Some 270's cannot take a 4" bore.
The 228/248 crank used in a 302 out 1/8" will give you a 306 which could turn a few extra revs. If it has a 4 bolt flange a flywheel is tough to come by. The small port haed is actually good on the street. When used with a big port manifold tapered to fit the port the engine has excellant low end torque right where you run the engine. 1800 to 3000
All the tin will work, oil pump, cam could be reground and probably is not steel....J.D.
