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Thread: 402 chevy big block

  1. #1

    402 chevy big block

    Is it possible to build a stroker out of a 402 bb chevy? its a 71 block out of a chevelle. is there any combinations?

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    May 2006
    Posts
    2,044
    I always thought a 396 or 402 was just a destroked 454, same bore but shorter stroke? I may be wrong though.
    maybe some of the true motor gurus could chime in here and enlighten us both.
    Cp
    ***IN GOD WE TRUST***

  3. #3
    Senior Member RACING JUNKIE
    Join Date
    Jan 2006
    Location
    La.
    Posts
    2,890
    a 396, is 3 3/4" Stroke same as a 427, the bore on a 396" is 4.093, the bore on a 427" is 4.250. the blocks are different, and it's rare to find a 396" blk. that will bore to a 427 size. However you can put a 454 crank in the 396" blk which is a 4" stroke, maybe more but i haven't seen it.

    Hope this helps.

    Zip.


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