340 General Rebuild Info- Cam Recommendations

Welcome Steve! Is your 340 a 10.5 or 8.5 to 1 comp engine? Headers? What carb and intake? Rear gear ratio?
My combo was a 484/284 hyd cam and GOOD valve springs, aluminum dual plane intake with 750 vac secondary Holley, electronic ignition and 1-3/4" headers with 2-1/2" exhaust to the rear axle. It was a 10.5-1 comp and maybe a bit more because the heads were "shaved" everytime they came off. It was a 4-speed with 3.23 gear and 27" rear dia. tire. Ran well, rumbled nicely. I thought it lacked low end until 3500 rpm. Best ET was 13.18 with slicks and open exhaust and MPH was 108. The cam was in the MP guide, recommended for an automatic. I figured it would work well with the 4-speed because of the 3.23 gear. Hope this helps and doesn't muddy the issue.
Fords,eh? Always thought a V8 Maverick would be fun. Either a 347 or there abouts or a Cleveland.