72 340 warranty block

RRman68 said

Thanks everyone for the info. I'm confused about the date thing, I get the original motor date should be late 71 but I assume that a warranted motor would be replaced some time after the car was sold and maybe blown up or whatever. ? So wouldn't the replacement motor(block) be dated after the car build date? Thanks

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The cast date and build date on the block are two different things the actual engine build up date ( when the short block was assembled with Pistons rods etc..)with a lot of the engine details are on the drivers side front just under the head. My demon was built on April 2nd 71, but the block was cast 7/7/70 it was assembled 11/23/70 but not put into the car for another 4.5 months on April 2 1971,

Most engines were cast 2 to 3 months before the car build date, and usually the engine build date will be anywhere from a week to a month before the cars SPD. But with mopar there are exceptions.