how much stroke can a 350 stock block take

Old 07-19-2010, 03:57 PM
  #1  
wibberg350
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Default how much stroke can a 350 stock block take

i run in a class that it has to be a stock block I'm not a huge fan of the 400CID and i have a 350 010 block that 40 over and i was wanting to go to a 4in crank or maybe a 4.125 stroke what do you guys thank i haven't talked to alot of guys about this. will it live or not it will be in a mud truck.
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Old 07-19-2010, 04:47 PM
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kwkracing
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Are you planning on running any water in the block for cooling? You can typically grind and fill the water jacket for a 4" stroke, not sure on any more
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Old 07-19-2010, 04:50 PM
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zipper06
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I just put together a 383" with Eagle SIR rods which had 3/8" bolts. Crank was 3 3/4" stroke, i had to grind the block to clear the bolt heads in several places near the bottom of the cylinders. I would think a 4" crank would be next to impossible without lots of grinding and weakening the block at the bottom of the cylinders.

JMO

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Old 07-19-2010, 04:52 PM
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wibberg350
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im going to do a short fill with hard block.
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Old 07-19-2010, 04:57 PM
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wibberg350
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i have a buddy with a 350 block with a 3 and 7/8 stroke it was hard blocked and it made 680 hp and its living so far it makes it a 397 ci im just looking for alittle more
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Old 07-19-2010, 07:47 PM
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wibberg350
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any body ever done one 24 people and nobody
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Old 07-20-2010, 12:13 AM
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wibberg350
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come on guys help me out anything
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Old 07-20-2010, 03:54 AM
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performanceengin
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with a 4" stroke. you will for shure hit water. it is exspensive but i would devcon the block instead of hard block.
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