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

Main cap positions

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Old Oct 20, 2006 | 09:43 PM
  #1  
BadBowLT1's Avatar
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Main cap positions

i think the machine shop mixed up my main caps is there anyway to tell if they are int he right position by the numbers on them?
greg
Old Oct 20, 2006 | 09:51 PM
  #2  
MachinistOne's Avatar
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Re: Main cap positions

Should have cast in numbers 1-5 front to back and a triangle pointing front.
Old Oct 20, 2006 | 09:58 PM
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Re: Main cap positions

if its not cast on them, one by one will have to torque them down and have the bore measured with a bore gauge
Old Oct 20, 2006 | 10:11 PM
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Re: Main cap positions

there r two sets of numbers one is the same on all caps and the others are 793 775 762 782 on the four caps
greg
Old Oct 21, 2006 | 02:23 AM
  #5  
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Re: Main cap positions

To my knowledge all late model blocks have cast numbers designating position..
Old Oct 21, 2006 | 03:14 AM
  #6  
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Re: Main cap positions

Originally Posted by MachinistOne
To my knowledge all late model blocks have cast numbers designating position..
I second that . they will have an arrow too.
Old Oct 23, 2006 | 07:00 PM
  #7  
BadBowLT1's Avatar
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Re: Main cap positions

ill look again man but i dont see them i know the arrows but the numbers r hiding from me
Old Oct 23, 2006 | 07:15 PM
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Re: Main cap positions

Got a digital camera? Posting the pics can help emensely.
Old Oct 23, 2006 | 07:26 PM
  #9  
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Re: Main cap positions

sure do give me a few minutes
Old Oct 23, 2006 | 07:38 PM
  #10  
BadBowLT1's Avatar
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Re: Main cap positions

I THINK I MAY BE PARANOID dunno ust got ****ed by the last machien shop i was at screw it thanks guys
Old Oct 23, 2006 | 07:54 PM
  #11  
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Re: Main cap positions

No worries man. If I had been screwed over by a shop i'd be hesitant to just go with the flow too.
Old Feb 22, 2007 | 04:06 PM
  #12  
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my shop did the same thing , here are the numbers on the top of the caps
20, 43, 63, 83, do you guys know which cap goes where? do i read the first number as cap postion 20= #2 piston 43= # 4 piston and so forth??
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