Here the oddes of the bunch on sb mopar I have a .60 318 with kb 399 pistons 64cc 360 steel heads 2.02/1.60 with lots of work 590/312 solid MP bump stick with a airgap intake Demon 750 race carb 4500 stall tci comp 727 with a cheata 486 gears with a 26x8 MT slick car runs 12.28 at 101.5 mph in the 1/4 and is red lined at 7600 rpms 100 feet before the traps. But my lil bomb just keeps taken it. lol But thats a 318 for ya. In the 8th it runs 7.65 at 90.8 mph at 6300rpm Never have got the math right on that but it will do it all day so im leaven it alone. oh ya the lower end is a steel 273 crank with H beam rods and is balanced. Its in a 1971 scamp that is 2690lb with me in it