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Old 09-28-2008, 02:54 PM
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454 Casting Number

HAVING PROBLEMS DECODING 454 MOTOR. I WENT TO A FEW WEBSITES MORTEC ETC. I NEVER SEEN 5 NUMBERS ON THE BACK OF ENGINE BLOCK USEALLY 6 OR MORE CAN ANYONE HELP 38959 THATS IT NO MORE ALL NUMBERS ARE CORRECT. PLEASE HELP

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Old 09-28-2008, 04:11 PM
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You're missing 1 or 2 numbers. Also 3's, 8's & 9's are hard to tell apart on casting numbers. Does your block have a Suffix code on the front passenger side deck pad of the block? Just in front of the head.
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Old 09-28-2008, 07:02 PM
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454 casting numbers??????????

yes thats all the the numbers no numbers on the front pass pad below the alt. ive got the motor pulled, cleaned,painted ive got nothing. i had a few other guys double check the numbers thats them 38959. may be a dump truck block? idk
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Old 09-28-2008, 07:36 PM
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3855961....396.......65-66...2 or 4 bolt
3855961....427.......66......2-bolt
those are the only 2 numbers I see even close to it, are you sure yours dont start with 385 instead of 389?
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Old 09-29-2008, 06:21 AM
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454 casting numbers

thanx but im 8 x sure tha back of the block is 38 959. it like its missing a number or even two. on top of tha is stamped cm 10 T.the pass back side is stamped f 21 77 may be it its a tall block i got nothing elese.
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Old 09-29-2008, 06:48 AM
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How about:

361959.....454.......73-90...2 or 4 bolt

Possible that 38 is really a 36? Maybe missing the 1?

Just throwing this out there.
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