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427 short block identification

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Old Sep 23, 2018 | 09:00 AM
  #41  
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Originally Posted by tkucala
I pulled the camshaft from the short block today. Cast into the shaft was 4366 and gm22. I believe it is a LS6 camshaft. If anyone could help please let me know. Thanks
Correct 427 crankshaft would be cast number 6223, "CRANK 396 427 BBC CHEVY CROSS DRILLED FORGED CRANKSHAFT 3856223"
Sounds like you have a built-up 454 engine. What flywheel and harmonic balancer were on this engine?
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Old Sep 23, 2018 | 10:43 AM
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Originally Posted by Mr D.
Correct 427 crankshaft would be cast number 6223, "CRANK 396 427 BBC CHEVY CROSS DRILLED FORGED CRANKSHAFT 3856223"
Sounds like you have a built-up 454 engine. What flywheel and harmonic balancer were on this engine?

that may be so but I have posted before at least six diffreant part numbers for 427 applications.
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Old Sep 23, 2018 | 01:16 PM
  #43  
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I measured the stroke of the motor at 3.76 so I believe it is a 427. Found partial number on front of crank 71 so maybe 7115 casting. Picture of rods show green paint not sure what that means yet. I will look for balancer and report back.
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Old Sep 23, 2018 | 03:53 PM
  #44  
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Leave the pistons in it, get a modern cyl head and cam ground for it instead to work with it all.
Get it right you can run some premium..maybe with a bottle per tank of Torco or?

Not sure if the rods were numbered/stamped like that unless they were in a machine shop at some point, correct me if Im wrong
Maybe it had a freshen up at some point.
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Old Sep 23, 2018 | 04:17 PM
  #45  
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Engine was bought from a rebuilder years ago. It has been in storage for many years but inside looks real good. I will research different heads and cam to see if can work with pump gas. Thanks
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Old Sep 23, 2018 | 05:49 PM
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Mike Jones or Chris Straub could get you headed in the right direction. Tony Mamo knows big blocks real well, too. Designs heads and cams.
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Old Sep 23, 2018 | 07:05 PM
  #47  
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Thanks for the suggestions. I will definitely look into it. I would love to leave rotating assembly as is if possible.
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Old Sep 24, 2018 | 03:18 PM
  #48  
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Originally Posted by tkucala
I measured the stroke of the motor at 3.76 so I believe it is a 427. Found partial number on front of crank 71 so maybe 7115 casting.
7115 - 396, 402, 427, forged, nitrided, cross drilled, 5140 steel

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Old Sep 26, 2018 | 07:51 PM
  #49  
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I would like to thank everyone for your input. I emailed Chris Straub yesterday and within 20 minutes he responded! He said with just a cam swap I could use the engine as configured with the heads I have. I believe that is way I will go.
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