Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

289 or 302

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Old Dec 13, 2006 | 08:23 AM
  #1  
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Default 289 or 302

can someone tell me if this is a 289 or a 302? is there anyway of telling the two apart by just looking at it or do i have to pull it and look at the vin on the block to tell?



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Old Dec 13, 2006 | 08:28 AM
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Default RE: 289 or 302

Pull the starter, and get the casting number off the block.
Old Dec 13, 2006 | 11:28 AM
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Default RE: 289 or 302

+1 it's hard to tell the difference between a 289/302 from a pic, they are both the same size, and use many of the same parts
Old Dec 14, 2006 | 01:12 PM
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Default RE: 289 or 302

Also harder to tell with aftermarket parts. My 289 came with a 2 barrel carb stock though.
Old Dec 14, 2006 | 03:21 PM
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Default RE: 289 or 302

ORIGINAL: restomod67

Also harder to tell with aftermarket parts. My 289 came with a 2 barrel carb stock though.
Other than the casting number on the block, you can be sure it's a 289 if it only has the 2 barrel carb. I can't imagine anyone with a 302 converting it to take a 2 barrel carb.

I haven't tried it yet, but a mechanic told me you might be able to get teh casting number without pulling the starter. Assuming that the block is dirty-but not too dirty-you can try placing a peice of white note paper up in between the starter and the block then run your hand over the raised casting numbers to transfer them onto the paper (via the grease that is likely to be there).
Old Dec 14, 2006 | 03:57 PM
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Default RE: 289 or 302

ya but some idiot could have put a 302 crank and rods in his 289 block but if you really want to see what the block is pull the intake manifold and there will be a hude number in the middle of the valley and there is what your block is as far as the running components inside you could a pull the whole motor apart or if you desperatly have to know just pull off a cyl head and get a wrench and turn the motor over by hand and measure the distance it travels from the top to the bottom then what ever that number is you will know what your stroke is and you just look up the stroke for a 302 and if it not that and a tad bit shorter then you have a 289
Old Dec 14, 2006 | 05:16 PM
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Default RE: 289 or 302


ORIGINAL: Brandontyler65

ya but some idiot could have put a 302 crank and rods in his 289 block but if you really want to see what the block is pull the intake manifold and there will be a hude number in the middle of the valley and there is what your block is as far as the running components inside you could a pull the whole motor apart or if you desperatly have to know just pull off a cyl head and get a wrench and turn the motor over by hand and measure the distance it travels from the top to the bottom then what ever that number is you will know what your stroke is and you just look up the stroke for a 302 and if it not that and a tad bit shorter then you have a 289

Exactly why would that make someone an "idiot"?
Old Dec 14, 2006 | 07:07 PM
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Default RE: 289 or 302

because the 289 block casting has shorter cylinder skirts and it can lead to problems because of the longer stroke
Old Dec 14, 2006 | 07:17 PM
  #9  
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Default RE: 289 or 302

Just a thought...didn't the 289 stop production before Ford introduced the engine number on the outside of the block (to match the VIN)?? Can anyone confirm this?

On my 302, it was stamped at the back sort of above where the bell housing meets the back of the engine. My 289 didnt have a visible number stamped on the outside.
Old Dec 14, 2006 | 07:29 PM
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Default RE: 289 or 302


ORIGINAL: Lumbergh

ORIGINAL: restomod67

Also harder to tell with aftermarket parts. My 289 came with a 2 barrel carb stock though.
Other than the casting number on the block, you can be sure it's a 289 if it only has the 2 barrel carb. I can't imagine anyone with a 302 converting it to take a 2 barrel carb.

I haven't tried it yet, but a mechanic told me you might be able to get teh casting number without pulling the starter. Assuming that the block is dirty-but not too dirty-you can try placing a peice of white note paper up in between the starter and the block then run your hand over the raised casting numbers to transfer them onto the paper (via the grease that is likely to be there).
Are you saying that all 289's are 2V and that all 302's are 4V?



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