Interesting that the Longfield 30/30 CV (in bold) appears to be stronger than a stock D60 front axle. All the longfield/newfield CV's broke the inner axle before the CV failed!!!
................................................ft lbs * degree * inner axle used * failure
stock toy birf..............................3700 .....30........long 4340.......birf expolded
randys birf elimn kit......................5000.....40........randys ...........ujoint broke
long treated oem birf....................5100 .....45.......long 4340.......stub broke
newfield 4340 birf........................7000......80.......300 m.............inner axle broke
longfield 4340 birf........................7000......80.......300 m.............inner axle broke
longfield 30 spline birf...................8900.....120......4340..... .........inner axle broke
stock toy 27 spline inner axle..........4000....20.......................... ..axle broke
stock dana 44 30 spline inner..........5200....25......................... ...ears broke
pig toy 27 spline 4340 inner............5500....90....................... .....axle broke
yukon dana 44 30 spline 4340 inner..5800....48............................yoke broke
longfield toy 27 spline 4340 inner.....6500....80............................ax le broke
stock dana 60 35 spline stub..........8300......80 ..........................ears broke
yukon dana 60 35 spline 4340 stub..12000....90..........................shaft broke
http://www.pirate4x4.com/forum/showthre ... ge=2&pp=25
http://www.pirate4x4.com/forum/showthread.php?t=351141