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  •  » how do you identify a 289 block

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    1/12/2022 8:33 PM  #1

    val fulesday
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    Registered: 9/23/2013
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    how do you identify a 289 block

    need to know how to identify ford Windsor blocks, specifically 289 from a 302

     

    1/12/2022 10:21 PM  #2

    MS
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    From: Canyon Lake, Texas
    Registered: 1/24/2013
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    Re: how do you identify a 289 block

    Is the number visible above the starter?  If intake is off, 289 is cast into the lifter valley.

    https://www.enginelabs.com/engine-tech/a-guide-to-ford-v8-engine-block-casting-numbers-1952-1996/

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    1/13/2022 6:48 AM  #3

    TKOPerformance
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    From: Newark, DE
    Registered: 12/15/2014
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    Re: how do you identify a 289 block

    The biggest difference is the stroke length.  302 is 3"; 289 is 2.87"  You could measure it down the bore if one of the heads was off.  Of course, as MS said, if its that far apart you should be able to see the 289 cast into the valley, and while not a positive identification for the block; the heads also have 289 cast into them inside the rocker area. 

     

    1/13/2022 7:13 AM  #4

    val fulesday
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    Re: how do you identify a 289 block

    thanks, the intake has been removed, so this should go smoothly
     

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    1/14/2022 5:41 PM  #5

    val fulesday
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    Re: how do you identify a 289 block

    I can't seem to run down this 289 block, the number on the oil pan rail c5af 6015 f

       •Thread Starter
     

    1/14/2022 6:43 PM  #6

    josh-kebob
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    Re: how do you identify a 289 block

    What were the valley castings

     

    1/14/2022 7:08 PM  #7

    val fulesday
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    Re: how do you identify a 289 block

    at the front of the lifter galley in a circle  1 3 5 7 6  about min way down 10, then a bit further down  a 0, and lastly 289

    Last edited by val fulesday (1/14/2022 7:09 PM)

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    1/14/2022 8:10 PM  #8

    Bullet Bob
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    Re: how do you identify a 289 block

    val fulesday wrote:

    I can't seem to run down this 289 block, the number on the oil pan rail c5af 6015 f

    Are you sure that AF isn't an AE?  I found the following on the site MS linked:

    C5AE – 1965-1967, 289 Windsor small-block, 2-bolt mains, 6-bolt bellhousing

    "you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
     

    1/14/2022 10:01 PM  #9

    val fulesday
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    Re: how do you identify a 289 block

    I shot it with a degreaser, scrubbed it with a brush, and at this point I can not swear to it that it is an e or and f

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    1/15/2022 8:12 AM  #10

    Bullet Bob
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    Re: how do you identify a 289 block

    val fulesday wrote:

    I shot it with a degreaser, scrubbed it with a brush, and at this point I can not swear to it that it is an e or and f

    Did you measure the stroke like TKO suggested.  Should be 2 7/8" for a 289 and 3" for a 302.  Is it a 6 bolt bell?  I don't think they made any 6 bolt 260s.

    "you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
     

    1/15/2022 8:37 AM  #11

    Nos681
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    From: Atlantic Mine, Michigan
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    Re: how do you identify a 289 block

    Any part numbers on connecting rods?
    Does crankshaft have 1M or 2M markings on counter weight by distributor gear?

    Last edited by Nos681 (1/15/2022 8:42 AM)

     

    1/15/2022 9:35 AM  #12

    val fulesday
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    Re: how do you identify a 289 block

    the long block is still together

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    1/15/2022 12:40 PM  #13

    BobE
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    From: White Plains, NY
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    Re: how do you identify a 289 block

    Val - next to where you read the C5AF 6015 F number on the oil pan rail, there should be a date code.
    The first number is the year, as '5' would be 1965, '6' for 66 and so on.  As Ford introduced the 302 in 1968, I would expect if this first number is a 5, 6 or 7, it is a 289. 
    The secong letter of the code is the month, the third digit is the day of the month. These shouldn't be necessary to verify the year the block was cast.  

    65 Fastback, 351W, 5-speed, 4 wheel discs, 9" rear,  R&C Front End.
     

    1/15/2022 2:26 PM  #14

    Nos681
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    From: Atlantic Mine, Michigan
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    Re: how do you identify a 289 block

    I was able to read the 1M stamp with distributor removed on my 289.

    Oil pan removal would allow inspection of several components at one time.

     

    1/15/2022 7:51 PM  #15

    lowercasesteve
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    From: Auburn, Ca
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    Re: how do you identify a 289 block

    Nos681 wrote:

    Any part numbers on connecting rods?
    Does crankshaft have 1M or 2M markings on counter weight by distributor gear?

    The only way I know of is to look at the rod bolds.  Later models have football(American!) shaped heads.  Early ones have rectangular ones.  I don't know when the changeover occurred.  Football shaped bolts are stronger due to a little more metal in the cutout for the bolt.
     

    Original owner - 351w,T-5, 4whl disks, power R&P
     

    1/15/2022 9:25 PM  #16

    MS
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    From: Canyon Lake, Texas
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    Re: how do you identify a 289 block

    Isn’t that just on 351w engines.

    What are you trying to determine about the 289 block?   Even Hipo blocks were no different other than beefier main caps.
    Otherwise all same.
    I think if I were to build a 289 right now, I would use a 5.0 roller block.
    Unless this is something you just want “original”.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    1/16/2022 8:16 AM  #17

    TKOPerformance
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    From: Newark, DE
    Registered: 12/15/2014
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    Re: how do you identify a 289 block

    I agree, and if I had the original engine for the car I'd just set it aside and build an engine for it that wouldn't matter if something happened to it.  If you're looking for something fun I'm going to tell you a stroker is a much better choice, but 289s make for a lousy stroker foundation because the cylinder skirts are shorter than the 5.0. 

     

     

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