need to reword this.
what would rpm be with gears of 3.73 or 3.90 at 70mph with a 700r4 and 25 inch tires? car now has 2;3? gears and just idles going up highway and no balls in town so wanting to go lower to help town performance still have descent cruising rpm on highway
this is for a driver[non race]350sbc with a small cam/headers/intake/650cfm carb.used for car shows and cruises but like to have a little more balls for burnouts without messing with engine.
friends car just trying to find rpm for him and i don't know myself how to figure it..helphotrodharley