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Thread: MPH to 1/4 mile time conversions

  1. #1
    datdude
    Does anyone know how to convert a mph to a guesstimate in 1/4 mile time...according to the Gaffrig water mph gauge I am running about 85. How accurate are these gauges? Thanks for any help.

  2. #2
    Jet Hydro
    Low 12`s if its hits it in about a 10 count.
    Use a GPS and count how long it taks to top out. Go 1001 1002 1003 and so on. Post how long it takes and we can give you a better idea. Just guessing I`d say 12`s in the 1/4. Gaffrigs are good but not as good as a GPS

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