stock 318 more torque?

^^^^^YUP^^^^ I think without more serious work, IE better heads, ports, valves, more compression, you may well be at the limit for "build" on a stock platform. But you may be leaving a lot on the table with tune, jetting and timing.

Mine with 3.89 (Ford) gears, 28.5" tires runs about 32-3400 at 70. You have to be careful, because just a short romp and you are over 85mph.

This is a completely stock mid 70's long block, with headers, 340 -ish cam, and 650 Edelbrock