gretchen/jason Posted October 21, 2007 Share Posted October 21, 2007 So im going from 300 horses to about 440 not sure about torque taking a stock 290 horse 310 ft lb of torque sbc doing a balanced roller cam roller lifter stroked 383 with a supercharger . Question is the bolts where the shaft mounts to the diff . Ive been using grade 8 bolts from the local hardware store are these good enough . They fit but have thread the entire length of the shaft of the bolt . Is there a better bolt for this aplicaition ? Ive seen grade 10 but how stong is that as i really dont know ive just been told the higher the grade number the stronger the bolt . But is that for say stretching strength or shearing strength like snaping a twig kind of thing . Jason Quote Link to comment Share on other sites More sharing options...
naviathan Posted October 21, 2007 Share Posted October 21, 2007 The grade 8 bolts should be fine. I think you'll tear out your u-joints before snapping those. Quote Link to comment Share on other sites More sharing options...
buZy Posted October 21, 2007 Share Posted October 21, 2007 Hey Jason here is a thread in which I upgraded to AN style fasteners. Hope this helps. Brian http://forums.hybridz.org/showthread.php?t=126197 Quote Link to comment Share on other sites More sharing options...
gretchen/jason Posted October 21, 2007 Author Share Posted October 21, 2007 Thanks all i wasnt sure if it was a usless question or not but thanks for the info I found a place that sells the stuff i would have never thought of it myself . Jason Quote Link to comment Share on other sites More sharing options...
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