appearance of a 340 vs. 360

Originally Posted by pro-tech
Dont the good 340s have 4 bolt main caps? and they are a bigger bore too. 2.02 valves.?

Bigger bores do help. Basic physics tells us this. A 340 bore would have 1.01% more down force with the same pressure exerted in the combustion chamber. Proportionately 1.01% more power with all else being equal. But it's not.
Bore your 360 to a 340 bore. It's only .040 and you'll have the best of both worlds. A 340 bore with a quarter inch longer stroke. It's like a 340 stroker for free. Only a 366 and not a 416. We won't tell anyone.