C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Oct 4, 2009 | 07:20 PM
  #41  
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ok...suppose this could be a few of the problems?



This rod bearing had to be close to "spinning"




Check out the heat spots from the friction



And the #3 piston

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Old Oct 4, 2009 | 08:26 PM
  #42  
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Default Rebuild it again.

FYI those older blocks (pre '70) had plenty of meat in them. U can still buy 0.080" overbore pistons sitting on the shelves. Something else is that i recently learned is that there are millions of used 350" s (3.48" stroke) with the small journals that will fit into that small journal block of yours - forged s BTW. That would give u more cubes for a little pocket change.
Just my 2 cents but there are so few engines that u can build so cheaply and make 400hp maybe even 450hp. Heck u already have the block and heads possibly reusable rods and too. With all the mega $$ blow outs using forged parts and fancy alum heads on this forum I would really enjoy reading a success story on a budget build here.

Good luck and keep us posted with your progress. U did such a great job restoring your vette i have high expectations on your engine replace/rebuild.
cardo0
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Old Oct 4, 2009 | 10:35 PM
  #43  
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resizing the rods is a must and cheap in comparison to buying new ones..and by the picture of number 3 piston, it's a miracle you had compression at all....
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Old Oct 4, 2009 | 11:23 PM
  #44  
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Originally Posted by GDaina
resizing the rods is a must and cheap in comparison to buying new ones..and by the picture of number 3 piston, it's a miracle you had compression at all....
yeah...would explain the extremely low reading
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Old Oct 5, 2009 | 01:33 AM
  #45  
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Yeah, this engine needs love, but I'm sure you will give it some.
You didn't tell us about the cylinder walls, especially those with the broken rings ?
However that may be, good luck with your rebuild and keep us informed...
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Old Oct 5, 2009 | 08:08 AM
  #46  
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Originally Posted by 73StreetRace
You didn't tell us about the cylinder walls, especially those with the broken rings ?
All 8 cylinders had the upper compression ring shattered. The cylinder walls are actually not as bad as I would expect given the broken ring issues. I will have to see if they can be cleaned up. I believe the block is already .20 over bore
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Old Oct 5, 2009 | 08:11 AM
  #47  
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I bet they were busted upon installation
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Old Oct 5, 2009 | 08:55 AM
  #48  
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Originally Posted by GDaina
I bet they were busted upon installation
It wouldn't surprise me ! Broken rings on all cylinders means something was badly made from the beginning !
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Old Oct 5, 2009 | 08:13 PM
  #49  
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What a fine mess you got yourself into lol.
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Old Oct 5, 2009 | 08:47 PM
  #50  
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Originally Posted by GDaina
I bet they were busted upon installation
Yup. My thoughts exactly as #5,6,7 and 8 came out
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Old Oct 5, 2009 | 08:48 PM
  #51  
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Originally Posted by SHAKERATTLEROLL
What a fine mess you got yourself into lol.
You know me...if it's not one mess, it's another
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Old Oct 6, 2009 | 12:12 AM
  #52  
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Yep I sure do lol. And I knew you were looking for a new can of worms lol.

But do not worry I am sure you will work them all out in time.

Last edited by SHAKERATTLEROLL; Oct 6, 2009 at 12:17 AM.
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Old Oct 6, 2009 | 01:46 AM
  #53  
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I just hope he didn't open Pandora's box...
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Old Oct 6, 2009 | 07:15 PM
  #54  
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Originally Posted by 73StreetRace
I just hope he didn't open Pandora's box...
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