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Rod and piston help!!!!!

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Old Apr 11, 2015 | 02:15 AM
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Default Rod and piston help!!!!!

Hello,
I have a 98 Corvette with a manual transmission that's completley stock. I recently spun a rod and it seized the engine. I was looking into getting my motor rebuilt but I wanted to know the correct size for the rods and pistons. I was looking into having the pistons and rods being forged. I've been looking at a couple different packages on texas-speed.com but i'm unsure on what size to get. I plan to later go full bolt on and cammed in the future. ANY input would help!! Thanks in advance.
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Old Apr 11, 2015 | 09:17 AM
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Well first you need to get inside the motor and see what damage you have. How many miles on the motor? If it is high mile motor I would bore it .030 over and get new pistons. If it all checks out, stick with the stock pistons. If you spun a rod bearing you'll need some crank work done. what rpm were you turning when it let go? Did you lose oil pressure? It's rare for a LS1 to have bottom end problems. Call Texas Speed about the sizes, I wouldn't order anything without knowing exactly what is hurt and why.
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Old Apr 12, 2015 | 02:30 AM
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I have read you cannot bore a LS1 much?
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Old Apr 12, 2015 | 02:35 PM
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Originally Posted by 1999corvettels1
I have read you cannot bore a LS1 much?
Correct you cannot bore a ls1 aluminum block. O.P. he is right about taking it apart to see what you really need before you order anything.

Last edited by feeder82; Apr 12, 2015 at 02:39 PM.
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Old Apr 12, 2015 | 03:22 PM
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Originally Posted by feeder82
Correct you cannot bore a ls1 aluminum block. O.P. he is right about taking it apart to see what you really need before you order anything.
I thought you could bore them .010" over?
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Old Apr 12, 2015 | 07:11 PM
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Originally Posted by Supercharged111
I thought you could bore them .010" over?
Yes you can

The major concern is when you add a power adder like boost or nitrous
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Old Apr 13, 2015 | 01:46 AM
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My mechanic tore it apart and it appears that the rod broke due to the oil pump going. Since the motor is already torn apart i would like to change the pistons and rods to forged . I would like to know what would be the correct size rod and piston for my stock block.
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Old Apr 13, 2015 | 10:45 AM
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Take it to the machine shop and let them tell you what to order.
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