Max stroke 10.200 block?

Discussion in 'PSI Superchargers Tech Questions' started by rb0804, Jan 25, 2017.

  1. rb0804

    rb0804 Active Member

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    I have an old cast Hemi KB block with standard cam location and standard cam bore, does anyone know off hand the maximum amount of stroke the block will take? Thanks in advance.
     
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  2. AJ FED

    AJ FED New Member

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    Hi rb.....I have an old hemi cast KB block and if memory serves it has a deck height of 10.700. The KB crank is +5/8" making stroke 4.375". Hope this is some help. Cheers.
     
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  3. OwnBlock

    OwnBlock Member

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    10.200 takeaway piston compression height, takeaway rod length, less 1/2 of stroke. have a play with this formula. depending on crank counterweight diameter will determine rod length for piston clearance to crank as it swings around.
     
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  4. DCobeen

    DCobeen Member

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    Aloha rb , So you have a -.500 short deck KB if the deck height is 10.200. Same as mine. I don't know what the max stroke would be, but I have a + .100 in my deal, crank is 3.850.
     
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  5. td3829mk

    td3829mk Member

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    both of my .500 short deck hemi's have had 3.750 stroke. both std/std as well.
     
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  6. rb0804

    rb0804 Active Member

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    I know a 4.250 stroke will fit, was wondering if a 4.500 stroke would fit. Not really concerned with rod length or compression height, more concerned about the rods hitting the camshaft or the pan rail. Thanks for the input thus far.
     
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  7. h2b puller

    h2b puller Member

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    4.250 will work 4.500 with aluminum rods need to machine the rods for making clearance with the camshaft
     
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  8. HootersFunnyCar

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  9. John byob

    John byob Member

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    Would anybody know if you can use dart or Veney fuel heads on a short deck hemi block??? Thx
     
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  10. dcovey

    dcovey New Member

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    I have a 4.500 stroke and using a steel Oliver rod. No clearance issues.
    Agree you would have to clearance a aluminum rod.

    Dave
     
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  11. John byob

    John byob Member

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    Std cam location
     
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  12. dcovey

    dcovey New Member

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    Yes..

    Dave
     
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  13. Blown5402

    Blown5402 Member

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    We run 4.1250 in the short deck blocks--
     
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