Making power out of the 318
Ok I'll say it. I like 318s better than 360s.
I can't figure out especially with the larger combustion chambers, why they further castrated 360s with dished pistons from the factory. I like the idea of a longer stroke, but the stupid low compression (I doubt any actually made the claimed 8.4:1 cr as advertised in any manual from back in the day as built). Probably why they're gas sucking pigs.
Though not "zero deck" every 318 I have seen the heads off of, at least started with flat tops.
I also can't figure out why a 360 is more likely to be sludged up than a 318. In my experience anyway. And I've been inside several of both.
I've never been able afford a 340 so I can't say anything about those. I can't even find a 340. Never have been able to around here even since the 80s.
Yeah, built up the same, I can see the POTENTIAL of a 360 being more potent than the 318. But I have never had a 318 vehicle that simply "ditching the 318 and replacing it with a 360" would have really made much difference in getting what I've needed out of it.
I have a build in my head that id like to try on a 360 one day that would definitely be an improvement over stock, but don't have anything that needs a motor to try what I am thinking of, on.
I will say that I have a 360 magnum in a Durango, and compared to the 4.7 in my pickup, the 360 mag runs circles around the 4.7 when pulling my camper. And the 4.7 js supposed to have 300 HP and 10:1 CR, which is more than the 240-ish my 360 mag is supposed to be....