I find it funny how everyone always say to build a 340 or 360 instead. And saying a 318 has a small bore,is laughable. You ever talk to an LS guy about small bores? Lol
To me it comes to incremental steps, like torque every 20 cid is like 25 lbs-ft, If your looking for a streetable 0.9-1.1 hp per cid about 20 hp per 20 cid, gearing .25:1 per 20 cid, rpm 200-300 rpm every 20 cid.
At a max end build the issue would rpm need and block strength more the the bore no allowing the air flow needed.
