I can't imagine a 617 with a one inch longer crank. I would think you are not looking at something correctly. But maybe it could be. Where do you pick up (measure) the extra inch? Do you have a picture? Also I have trouble grasping what you mean by a stripped om-617a short block. Stripped of what? A 617NA would be a non turbo charged engine. What is a 617a engine?

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Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!