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

what would u make of this

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Old Dec 2, 2006 | 07:00 PM
  #1  
etex95's Avatar
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what would u make of this

http://cgi.ebay.com/ebaymotors/LT4-S...QQcmdZViewItem

Old Dec 2, 2006 | 07:18 PM
  #2  
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Manley valves? Yet there selling roller rockers?
Old Dec 2, 2006 | 07:25 PM
  #3  
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any more ideas out there?
Old Dec 3, 2006 | 11:45 AM
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It says that they were found in the Manley box in a reprocessed storage tank.
They say they matched these rockers up to a known set of LT4 rockers. I believe Crane makes the LT4 rockers and those rockers are marked "Crane" and have the bowtie logo engraved on them so they are most likely the real deal. Ebay auctions always make me nervous though.

Last edited by 2000GTP; Dec 3, 2006 at 11:48 AM.
Old Dec 3, 2006 | 11:49 AM
  #5  
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He explains the rocker arms were found in the Manley valve box. Not sure why he thinks this is important. The OEM LT4 rockers were made by Crane.
FOUND IN REPROCESSED STORAGE TANK. SET OF 16 ROCKER ARMS. CHECK SPECS # TO SEE IF THEY ARE WHAT YOU NEED. THEY CAME IN THE BOX AS SHOWN , THEY LOOK RELATIVELY UNUSED, NO CRACKS, HEAT STRESS MARKS OR WEAR MARKS . I BELIEVE THEY ARE FOR LT4 ENGINE (SEE DETAILS BELOW FOR EXAMPLE) BUT CANNOT BE SURE. THEY DID MATCH UP WITH THE NOS GM #12557779 SET WE SOLD LAST WEEK .SEE OTHER AUCTIONS FROM STORAGE TANK.

That's the correct part # for the LT4's.
Old Dec 3, 2006 | 01:24 PM
  #6  
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Didn't GM recall some of the early LT4 rockers and replace the with updated parts? There was a TSB on this problem. Perhaps these are waranty take offs.
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