I think a stock block can live pretty well if the tuneup is right and you have a good machinist.
My current setup is about 3 season in and has had pretty good success.
Its a 66 383 block bored .060 over with ross pistons, manley rods, 440 source 4.25 crank. Indy EZ hand ported heads, indy R3 solid roller camshaft. Cast intake with 1050 dominator.
The car runs 10.0-10.1 on motor at 3610 lbs with a 275 drag radial. I spray it with nitrous on a single Induction solutions plate with a .076 nitrous jet (175hp) and it runs 9.0-9.1 at 149-150.
This combo has been together for about 3 years and seems to be doing just fine to this point, it has to be making somewhere around 1000 hp to the flywheel to run that mph at 3610.
When was the last time you had the oil pan off to look at the main webbing?
BTW, that is a stout "383"
