63 Front mounting cushion bolt size - NCRS Discussion Boards

63 Front mounting cushion bolt size

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  • Edward J.
    Extremely Frequent Poster
    • September 15, 2008
    • 6942

    63 Front mounting cushion bolt size

    I am wondering if the front diff. mounting cushion bolt size is correct on my Corvette, its a 7/16 bolt size. the hole dia. on the cushion seems much bigger.???
    New England chapter member, 63 Convert. 327/340- Chapter/Regional/national Top Flight, 72 coupe- chapter and regional Top Flight.
  • Alan D.
    Extremely Frequent Poster
    • January 1, 2005
    • 2038

    #2
    Re: 63 Front mounting cushion bolt size

    "The "snubber" bolt, originally GM #454949, is a 7/16-14 X 2-3/4" SAE grade 8 bolt." (was listed as GM 300M)
    information from Joe Lucia, so try a search on pn for details
    Last edited by Alan D.; November 5, 2015, 12:29 PM. Reason: add GM grade

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