I don’t know why the cast 455 after market cranks don’t offer a 3” main version with the Pontiac journal size. They already have the casting it’s just a mater of making the mains 3”. This would make for a very cheap upgrade for a basic 400 low compression late model rebuild. With the amount of companies using the same basic casting I am surprised no one has done it. It seem to me an arrangement were they want to force you to use aftermarket rods and pistons for a bigger profit. For the guy on a budget the ability to use cheap cast pistons and rods when you want torque not horsepower would be great.
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