LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

piston bore?

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Old Apr 7, 2008 | 09:33 AM
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Austin_78@msn.com's Avatar
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piston bore?

can anyone tell me what the stock bore on the z28 is for the 1993
Old Apr 7, 2008 | 09:35 AM
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4.0" bore x 3.48" stroke
Old Apr 7, 2008 | 09:35 AM
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4 = bore
3.48 = stroke
Old Apr 7, 2008 | 11:47 AM
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honing

now im not sure this question fits this forum, but is honeing the cylinders just cleaning them, them boreing them is when of course you increase the cylinder size?
Old Apr 7, 2008 | 11:59 AM
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Cylinders are bored and then honed to final size.
Old Apr 8, 2008 | 12:04 AM
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so if you are honing the rust out of your cylinders then your cleaning them without the bore or with it???
Old Apr 8, 2008 | 12:08 AM
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For a cylinder cleanup you would just hone the cylinder, if the motor needs to be rebuilt and you are going .030 over you would bore, then hone.
Old Apr 8, 2008 | 12:13 AM
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ok thats what i thought!
but i just had to make sure...
thanks
Old Apr 8, 2008 | 04:42 AM
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Yes, but honing does remove some metal and thus will slightly increase the bore.

Rich
Old Apr 8, 2008 | 03:19 PM
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so should i buy forged or regular stock pistons???
if i buy the regular sized ones, will this screw up my compression or anything?
Old Apr 8, 2008 | 06:56 PM
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Originally Posted by Austin_78@msn.com
so should i buy forged or regular stock pistons???
if i buy the regular sized ones, will this screw up my compression or anything?
are you boring or honing? if you have rust, I would think you will need to bore it out some - if you aren't going to go to radical then stock-type pistons would be fine - check out this site for more info:

http://kb-silvolite.com/article.php?action=read&A_id=5
Old Apr 9, 2008 | 12:04 AM
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i am just honing surface rust out and wated to know if the stock pistons if i am buying will fit and not mess anything up.

Last edited by Austin_78@msn.com; Apr 9, 2008 at 12:10 AM.
Old Apr 9, 2008 | 05:07 AM
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They will probably be ok. Only way to tell for sure is to take measurements.

Rich
Old Apr 9, 2008 | 08:54 AM
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ok then
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