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Thread: Best 915 tranny : 72 or 83 w/LSD ?

  1. 04-18-2010, 09:19 AM #1
    RS-GT
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    Best 915 tranny : 72 or 83 w/LSD ?

    Hi,

    I can get an original 915 mag tranny (1972) no LSD or a Aluminium stock 915 with stock LSD (1983 - which is I think 40% lock ?)

    Based on same good price for both... Which one will you suggest for a 200 hp (2.4 PMO/twin plug) in a stock body LWB project ?

    Thanks !

    JD
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  2. 04-18-2010, 09:32 AM #2
    a911s
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    At 200 HP either will be fine. Depends on the condition of the box, gears, R&P, etc. 7:31 is better gearing for your motor, 8:31 aluminum box is better for 275+ hp. LSD is a big plus either way.
    Randy Wells
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  3. 04-18-2010, 09:53 AM #3
    RS-GT
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    Thanks Randy, I finally found great articles on Pelican ; I will stay with the 7.31 and wait to find a LSD to go in !

    Regards
    JD
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