i`m trying to find out what year slant i have. i looked all over the block and didn`t find any date. the numbers on the deck say its a 225 and the head doesn`t have spark plug tubes. where do i need to look?

There is a machined flat above the number one spark plug that will have all the info stamped on it from the factory, this probably blocked from view by your alternator.

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1956 Dodge D100 Pick up
power plant 225 slant six

here are the #`s i found-

on the deck of the block- 0 225 R1 10 2L

rt. side of the block-3489

lt. side of the block-3304

on the head-3419 4104362

on the deck of the block- 0 225 R1 10 2L

If I am interpreting this right your motor is a 1970, 225, built on October 2 1970 correct me if I am wrong. Jim

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1956 Dodge D100 Pick up
power plant 225 slant six