My Comp XE256H cam did a 2.3 second 60' in the quarter mile in my 76 GMC half ton equiped with a stock 1200 rpm torque converter and 3.07 gears. Tires were BFGoodrich Long Trail 265/70r15, nothing super sticky. It ran 15.3 overall in the quarter mile at 88 mph. Bascially, it makes a lot of torque to get the lump rolling with only 3.07 gears. I'm guessing around 420 ft lbs at the crank. The cam really runs out by 5500, though. An XE262H will make power well through 5500 rpm. I'm also running just a performer intake, if you ran a performer rpm intake with the XE256, it would probably wake up the top end a little.