Let me give you guys some additional info. I've installed a Holley Weber carb from Tom Langdon as well as his mini HEI kit , a compression test was done about a year and a half ago but I don't remember the exact numbers, I rememer being pleasantly surprised by them. Why such a drop off in torque from 3rd to 4th? I'll check the timing over the weekend. I've not ever adjusted the valves so I will look into them as well. I'll give an update on Monday if all goes well.