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Stock Driveshaft Strength...

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    Stock Driveshaft Strength...

    I've been thinking, my U-Joints are stock as well as my drive shaft. If I start modifying my car how much HP/TORQUE can my stock shaft and joints take?
    1987 LTD CROWN VICTORIA, 5.0 EFI, MAGNAFLOW DUAL EXH, RED LANDAU
    FRESH AOD, 3.27 OPEN DIFF, 57K MILES, B&M SHIFT KIT AND R134A A/C



    #2
    im running 300RWHP and
    about 400 RWTQ on 325 drag radials with a stock driveshaft, i think the u-joints may even be original.

    Power does not break stuff, traction does.
    http://secondhandracing.com/Home.aspx
    http://secondhandradio.com/

    R.I.P. Jason P Harrill 6-12-06

    http://www.grandmarq.net/vb/showthread.php?t=5634

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      #3
      Good to know, I don't plan on anything close to that. Thanks for the info.
      1987 LTD CROWN VICTORIA, 5.0 EFI, MAGNAFLOW DUAL EXH, RED LANDAU
      FRESH AOD, 3.27 OPEN DIFF, 57K MILES, B&M SHIFT KIT AND R134A A/C


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        #4
        You should be fine, if there is a concern you can always replace it with the later model police aluminum driveshaft, or one from a tow package car. They have a bigger U joint and the shaft is larger. Its usually not the weak point unless you start making a whole lot more power than stock and are able to hook it up.
        86 Lincoln Town Car (Galactica).
        5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

        91 Lincoln Mark VII LSC grandpa spec white and cranberry

        1984 Lincoln Continental TurboDiesel - rolls coal

        Originally posted by phayzer5
        I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

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          #5
          Just see if you can find an aluminum driveshaft from a PI, then you won't have to worry about it. Those also make your car more stable at high speeds, at least that's what i've heard.
          88 Town Car (wrecked, for sale)
          Walker OEM duals with muffler deletes

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            #6
            I had a lot of issues with the stock steel shafts and ripping the flange off the pinion with my 200hp/275ft*lb motor...No issues with my current much higher HP and aluminum shaft with standard replacement U joints.

            The aluminum shafts are lighter and don't vibrate as much.
            Builder/Owner of Badass Panther Wagons

            Busy maintaining a fleet of Fords

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