Attn:Joe Lucia ; 1970 LT-1 Bellhousing;Clutch - NCRS Discussion Boards

Attn:Joe Lucia ; 1970 LT-1 Bellhousing;Clutch

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  • Larry E.
    Extremely Frequent Poster
    • December 1, 1989
    • 1652

    Attn:Joe Lucia ; 1970 LT-1 Bellhousing;Clutch

    Hello:

    Need help on strange problem. We are redoing 70-Z28-LT-1. This may also apply
    to Corvettes. I am told it came with 38999621 Bellhousing(11" Housing) but
    specs(AMA) on car are 11" clutch with small flywheel (153 tooth)(12.75"). Is this possible? Talked to several clutch people and they claimed they never
    heard of this. Please Advise.

    Thanks; Larry Evoskis
    Larry

    LT1 in a 1LE -- One of 134
  • Joe L.
    Beyond Control Poster
    • February 1, 1988
    • 43193

    #2
    Re: Attn:Joe Lucia ; 1970 LT-1 Bellhousing;Clutch

    Larry-----

    The clutch folks are correct. GM NEVER used an 11" clutch with a 12-3/4" flywheel. 10" clutches were used with a 14" flywheel, but 11" clutches were NEVER used with a 12-3/4" flywheel.

    Beyond that, the GM #3899621 bellhousing was never used with anything other than a 14" flywheel.

    The AMA specs are notoriously and famously inaccurate. One would think that they would be very accurate, but they are not.
    In Appreciation of John Hinckley

    Comment

    • Larry E.
      Extremely Frequent Poster
      • December 1, 1989
      • 1652

      #3
      Re: Attn:Joe Lucia ; 1970 LT-1 Bellhousing;Clutch

      Thanks Again Joe; Your the best; Larry Evoskis
      Larry

      LT1 in a 1LE -- One of 134

      Comment

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