I'm looking for some advise on my what seems to be my underpowered 84 toyota. It has the 22r motor. header, stock carb.mild cam, 4.88 gears, lockers, marlin crawler. runs on 33x10.50 swampers. The thing seems so underpowered. It takes me about 1 mile to reach 50 mph and hit 5th gear. Not sure if this is normal or not but looking for any advice on what to get a little more zip out of it. Not interested in a motor swap at this time though. Thanks.