My uncle bought an olds diesel new and within the first 12K miles it broke the crank.

They beefed them up after that I believe.

There is a lotof similarity between the diesel 5.7 and the olds gas engines of the same era. In fact you can bolt on gas heads and intake and substitute a distributor for the fuel pump and have a very nice, stout gas engine.

So the blocks may be actually different but they were clearly tooled on the same tools.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.