ok, i bought this block and crank together. i was told it was a gsr crank, but after getting the motor put together, im not sure. on rotation of the crank, the pistons go just barely above the top of the cylinder. and i mean barely. but still past it. but what really has me thinkin its an ls is because the gsr rods i have a little side to side play on the crank. the ls crank has wider journals than the gsr right?