SV offset crank grind

Discussion in 'The Skunkwerks' started by eeyore, Feb 18, 2017.


  1. eeyore

    eeyore Farmall Cub

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    I'm building a 392 and interested in offset grinding either a 345 or 392 crank for more stroke and to bring the pistons up in the block. Problem is I can't find bearings with more than a -0.040 undersize. At one time I thought I saw some -0.080 bearings, but I can't remember where I saw them and can't find them any more. I also thought Tom Mandera had mentioned he had a source for -0.060 bearings, but if he said where, I couldn't find that either. So, does anyone know where more than a -0.040 undersize bearing can be found? Also is there any advantage to using the 345 crank over the 392 assuming I will lighten the rods. I have both cranks, but I have concerns with the condition of the 345 crank.
     
  2. jeff campbell

    jeff campbell Lives in an IH Dealership

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    more the under size the more prone you are to a problem. was alway's told that. send tom mandera a PM and ask him.
     
    Last edited: Feb 18, 2017
  3. bmacguyver

    bmacguyver High Wheeler

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    for an offset grind on the crank dont they normally weld the crank to maintain crankpin size?
     
  4. Tom Mandera

    Tom Mandera Dreams of Cub Cadets

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    You can have it welded and recut, but I've just had it offset ground and I've only used the .040 under-sized rod bearings.

    You'll still have to deck the block to zero-deck it, just not as much.
     

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