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Thread: Chevy Crank stroke?

  1. #1

    Chevy Crank stroke?

    What is the shortest stroke crank u can put in a chevy big block? :lol:

  2. #2
    Senior Member EXPERT BUILDER
    Join Date
    Jan 2005
    Posts
    336
    i hope if your planning on building a high rpm motor,your planning on putting it in a reeeeally light car or your better off thinking the opposite!

    366T = 3.935" x 3.76"
    396 = 4.096" x 3.76"
    402 = 4.125" x 3.76"
    427 = 4.250" x 3.76"
    427T = 4.250" x 3.76

    348 = 4.125" x 3.25" (6.125" rod)
    409 = 4.312" x 3.50" (6.010" rod)
    427 = 4.312" x 3.65" (6.135" rod) 1963 "Z11" SHP drag race

    so to answer your question 348 has the shortest of these but im not sure if its considered a bbc that your looking for...probably the 366 to 427 would be shortest id use for high rpm...but then again i dont remeber seeing a gooood steel crank with that short of an arm(4340)


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