Re: 390 RPM Redline
i run a 390 in my 1974 f-350 single rear wheel, mudder/daily driver, stock bottom end ,aluminum edelbrock intake,high rev lifters, 428 scj cam, and headers, i'm going on 4 years, hard miles,my eng. revs 6600 rpm without to much effort. the biggest key is tuning the carb. took me a month to get my carb right.