found the article.The engine was 446 CI,it had a 61 SD welded forged stroker crank,4.125 stroke.It made 555 HP.IF that was then engine that was in the car when I sold it.The engine in the article was the factory alu block engine.Hope it helps.Tom
I have a 480511 sandblasted&painted-$50 also a 480508 which measures the same 7 3/16" as the 507.Price the same.If interested we can be reached at 414-466-2300-shop hrs CST