A mild and wild example as mentioned. Good reading.
Use ARP rod and crank hardware and you'll have a solid, reliable 6,000 rpm engine. My first 318 was in a '69 Charger. It was a budget build. We re-used the factory bolts and I regularly revved the 5,800 rpm...I mean multiple times a day....and it never broke. Back then there weren't nearly as many parts available, and I was the typical broke teen. I did manage to use the CompCams 260 High Energy cam, some cheap headers, an Edelbrock SP2-P intake (not great for top-end power, but it was a 4V intake and it made dynamite low end power. It was a good combo for a 3,800lb + car with 2.76 gears. It also regularly managed 19mpg. I tried the old 360 heads and intake swap, but mileage dropped to 17mpg, and it lost a little bottom-end power. Within six months I'd gone back to the 318 heads and SP2-P. Nowadays, the cams are better, intakes too. It's a lot easier to tune around the usual issues and keep the low-end power and mileage while making more top end power than ever. Where I figure I had a 250hp 318, (270 with the 360 heads/intake), you can easily get 400hp with a 360-topped 318 these days. Oh, started with a Holley 600 vacuum sec. Had no idea on carb tuning, and didn't have a box full of Holley tuning parts. Eventually got what I wanted to begin with, a 750 Edelbrock AFB-style carb. Had it tuned in a few minutes, made one metering rod swap and it was running better than ever. Holleys are great, but if you don't know much, avoid them.