LT1/LT4 Tech 1993-1997

Some engine questions

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Old Apr 29, 2012 | 06:11 PM
  #11  
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anything over 030 is pushing it. you can go 060 over but the chances of it cracking is high. why not go with a used block. should be a few around.
 
Old Apr 30, 2012 | 09:30 AM
  #12  
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Well I'm picking up a new block this weekend. Also while looking at pistons i was wondering if I have to use lt1 pistons, of if i could use sbc gen 1 pistons, or even ls1 pistons.
Thanks!
 
Old Apr 30, 2012 | 10:48 AM
  #13  
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they would be heavier so you would need to balance the crank to match. just so you know lt1 like high compression. depending on what your doing with the motor, with no boost 11 to 1 is good, 11.5 better.
 
Old Apr 30, 2012 | 11:03 AM
  #14  
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well i have 2 pulleys for my supercharger, one is 6psi, and the other is 12psi. I was assuming that low compression and boost would be faster than high compression and no boost, but correct me if I'm wrong.
And will i have to get my crank rebalanced anyways, unless i get the exact same piston weight as before?
 

Last edited by SMatyac; Apr 30, 2012 at 11:06 AM.
Old Apr 30, 2012 | 11:20 AM
  #15  
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correct low compression for boost. lighter is better but if boost stronger is better. what pistons you plan on using. dimond, je, manley?
 
Old Apr 30, 2012 | 11:35 AM
  #16  
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That's what I'm trying to figure out.
Any suggestions?
And my rods don't have any markings except for a faint p04 on one side. how do i tell if they are forged?
 

Last edited by SMatyac; Apr 30, 2012 at 01:21 PM.
Old May 1, 2012 | 10:52 AM
  #17  
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Should be a double parting line running along the length of it. Non-forged have single parting line. I'll see if I can find a good picture so you can compare.
 
Old May 1, 2012 | 10:54 AM
  #18  
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Couldn't find pictures. But found this video that gives pretty good information.

Automotive Connecting Rods 101 - YouTube
 
Old May 1, 2012 | 02:45 PM
  #19  
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Thanks, that's exactly what i was looking for.
My rods are forged, so that's good news.
I'm picking up a block today, so hopefully ill have it back on the road soon.
 
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