My first pump gas 511 stroker (4.375x 4.250 stroke w/BB Chevy rod journals sizes)400 block motor had a forged steel H beam BB Chevy type 6.800 long rod and Ross custom 22.0 cc dish pump gas pistons, that was built in and dynoed in 2002, started driving and racing that motor in 2005 and is till running today. I swapped the 4.250 stroke crank out in 2007 and put in a 4.300 stroke to move the pistons up to zero deck to get 10.28 to 1 compression after swapping out the iron 906 heads to a set of CNC ported Eddy RPM, the crankshaft swap picked the car up .2 ET(10.69 to 10.49 ET) and 3 mph(124 to 127+) with no other changes I had swap the heads the winter before and that picked it up similary also.