Crank bolt size and length question.

Discussion in 'PSI Superchargers Tech Questions' started by caseyspradlin, Jan 11, 2021.

  1. caseyspradlin

    caseyspradlin Member

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    Switching from lunati crank to callies magnum. This is for 526 ci BBC 1471 35# boost top dragster. I use ATI dampener with magnets and bolt blower pulley directly to dampener
    I have had 2 lunati cranks, both have 3/4” crank bolts. One is 1.5” long and the other is 5.5” long all the way into the 1st main.
    The callies came with 1/2” bolt 1.5” long.
    I have called and their opinion was I would be ok.
    What are your thoughts? What about crank bolt torque? Plan on using ARP bolt.


    Thanks ITA

    (Crank is brand new so not considering switching to different brand at this time)
     
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