ID numbers for motor
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Senior User
Joined: Apr 2007
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From: Kershaw, South Carolina
ID numbers for motor
I know the motor is a 289 but where are the ID numbers on the block? I have the numbers off the intake, but I'm not sure where to start cleaning to find the rest of the numbers I need.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
289 engines were introduced in 1963, used thru the end of the 1968 model run.
Elder User
Joined: Jun 2004
Posts: 800
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From: Edmonton, Alberta Canada
the casting numbers are above the starter.
the only year that the casting number can't tell you if it is a 289 is 68 (C8) casting number as the 302 and 289 used the same block that year. but the casting number will be able to tell you if it is a 289 block for the other years as the 289 didn't share the same block with the other engines (different bore therefore different casting number).
quick way to tell if it is a 63 or 64 model is if it has 5 bellhousing bolts as in 65 they went to 6 bolts for the bellhousing.
rgds
Mike
the only year that the casting number can't tell you if it is a 289 is 68 (C8) casting number as the 302 and 289 used the same block that year. but the casting number will be able to tell you if it is a 289 block for the other years as the 289 didn't share the same block with the other engines (different bore therefore different casting number).
quick way to tell if it is a 63 or 64 model is if it has 5 bellhousing bolts as in 65 they went to 6 bolts for the bellhousing.
rgds
Mike
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
the casting numbers are above the starter.
the only year that the casting number can't tell you if it is a 289 is 68 (C8) casting number as the 302 and 289 used the same block that year. but the casting number will be able to tell you if it is a 289 block for the other years as the 289 didn't share the same block with the other engines (different bore therefore different casting number).
quick way to tell if it is a 63 or 64 model is if it has 5 bellhousing bolts as in 65 they went to 6 bolts for the bellhousing. \
1962 thru MIDYEAR 1965, and the 5 hole block was cast as a 221, not a 289.
rgds
Mike
the only year that the casting number can't tell you if it is a 289 is 68 (C8) casting number as the 302 and 289 used the same block that year. but the casting number will be able to tell you if it is a 289 block for the other years as the 289 didn't share the same block with the other engines (different bore therefore different casting number).
quick way to tell if it is a 63 or 64 model is if it has 5 bellhousing bolts as in 65 they went to 6 bolts for the bellhousing. \
1962 thru MIDYEAR 1965, and the 5 hole block was cast as a 221, not a 289.
rgds
Mike
A block casting number will not ID any engine size. Please explain exactly how this can be accomplished.
Block casting numbers cannot be cross referenced to any Ford part numbers.
Blocks are cast as one size, only when finished can they be something else.
Elder User
Joined: Jun 2004
Posts: 800
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From: Edmonton, Alberta Canada
i beg to differ.
taken off another post on this site
Kelly hotrod - Ford Engines Page 2
there are only 4 sizes of small block (that is blocks that share same external dimensions) the 221 at 3.5" bore, the 260 at 3.8" bore and the 289 and 302 at 4" bore.
although Ford used the same external mold pattern for the 221, 260 and 289, there is no way they cast the block to the 221 dimensions and then bored it out .5" to get a 289. that would be very uneconomical and time consuming. easier to change the corresponding pattern for the bores and add a revsion code to the casting number as the above chart notes to determine the engine size. also the only 6 bolt blocks were the 289 and 302 blocks as the 260 was discontinued when Ford switched and the 302 wasn't introduced till 68 model year. therefor any casting number with C5 or C6 (as long as it is a small block) has to be a 289 by default. the 302 block uses slightly longer cylinder walls due to longer stroke, so this is a new casting. instead of using two different castings they just used the 302 block and put the 289 rotating assembly in it. so that is the only year that the block casting number will not tell you the engine size.
i do agree that on all other Ford engine lines (except for the 351C and 351W and some one off hi-po engines (429Boss, 427SOHC and the 427 engines)as they are the only engine sizes that use that block) the casting number will not tell you the size of the engine. example 429 and 460 share the same block same as the 351m and 400.
now there might be other engine blocks from different engine families that use the same casting number, and therefor if you do not know what engine family the engine is, the casting number probably will not pinpoint the engine for you with out some further investigating and elimination.
so a blanket statement that the casting number will not tell you the engine size is just un-true. so don't take the above as a knock against you, but i know that statement is incorrect and your knowledge of the different part # and such is greatly appreciated and helpful.
rgds
Mike
taken off another post on this site
Kelly hotrod - Ford Engines Page 2
there are only 4 sizes of small block (that is blocks that share same external dimensions) the 221 at 3.5" bore, the 260 at 3.8" bore and the 289 and 302 at 4" bore.
although Ford used the same external mold pattern for the 221, 260 and 289, there is no way they cast the block to the 221 dimensions and then bored it out .5" to get a 289. that would be very uneconomical and time consuming. easier to change the corresponding pattern for the bores and add a revsion code to the casting number as the above chart notes to determine the engine size. also the only 6 bolt blocks were the 289 and 302 blocks as the 260 was discontinued when Ford switched and the 302 wasn't introduced till 68 model year. therefor any casting number with C5 or C6 (as long as it is a small block) has to be a 289 by default. the 302 block uses slightly longer cylinder walls due to longer stroke, so this is a new casting. instead of using two different castings they just used the 302 block and put the 289 rotating assembly in it. so that is the only year that the block casting number will not tell you the engine size.
i do agree that on all other Ford engine lines (except for the 351C and 351W and some one off hi-po engines (429Boss, 427SOHC and the 427 engines)as they are the only engine sizes that use that block) the casting number will not tell you the size of the engine. example 429 and 460 share the same block same as the 351m and 400.
now there might be other engine blocks from different engine families that use the same casting number, and therefor if you do not know what engine family the engine is, the casting number probably will not pinpoint the engine for you with out some further investigating and elimination.
so a blanket statement that the casting number will not tell you the engine size is just un-true. so don't take the above as a knock against you, but i know that statement is incorrect and your knowledge of the different part # and such is greatly appreciated and helpful.
rgds
Mike
