484 cubes with a 4.15" crank and 4.310" pistons at 11.6:1 on pump. Should be good for 9.80-9.90 in my '70 Cuda that weighs 3240lbs in pro street trim...In the middle of putting it back togather, I kept having oiling issues to the push rods.

I also drive a '70 Charger with a mild hemi that is at the same cubes (484) after the last rebuild and a solid .560 cam, 10.5:1 and a Ray Barton intake with a 950 carb on pump gas, and weighing in at 4010lbs with driver, I have netted an 11.13 on drag radials...Nearly stock config and is driven almost daily.