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  1. #1
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    question on 2.5 crank

    i have a question on a 2.5 crank when they say small bearing crank what exactly are they referring to the top bearing or the center mains or bottom bearing . and whats the difference in diameter from small bearing to large bearing cranks . if its in the upper end can you run a small or large bearing as long as you use the same end cap it was made for on the same crank. so what i am asking is the diameter of the end cap the small or large bearings the same to use in any block or are the blocks different to except them. the reason i ask is i was told i have a small bearing block and wanted to see what was enter changeable or what to look for. thanks for any help .

  2. #2
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    big bearing usually (by most) refers to a big ball bearing similar to one on tha bottom of tha crank.. only used on high performance '98 and above 260/280/300 blocks...

    tha other two are usually referring to "crank journal" size of "production" motor top bearing.. some seem ta call tha larger "journal" a big bearing not knowing tha difference.. just tha way wording has played out over tha years.....

  3. #3
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    appreciate the info thanks .

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