FWIW - 2003 & 2004 blocks use different cam bearings (1 & 5, 2 & 4)
01-30-2004, 07:43 AM
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FWIW - 2003 & 2004 blocks use different cam bearings (1 & 5, 2 & 4) Recently did a couple of 427's and discovered GM changed the cam bearing size on their latest blocks. Does GM have part #'s, no. But lucky for all, here they are:
1 $ 5 - 12574413
2 $ 4 - 12574414
Number 3 is still the same.
If you're planing on a rebuild of these motros, wait. The current GM price is $81.20 list PER BEARING. I just had to buy five (5) sets, and the cost was over $1,200.
FM or Clevite (don't remember, will post after I ask again) is currently in production for these items, the cost will be more like $35 apiece. Still ridiculous...
1 $ 5 - 12574413
2 $ 4 - 12574414
Number 3 is still the same.
If you're planing on a rebuild of these motros, wait. The current GM price is $81.20 list PER BEARING. I just had to buy five (5) sets, and the cost was over $1,200.
FM or Clevite (don't remember, will post after I ask again) is currently in production for these items, the cost will be more like $35 apiece. Still ridiculous...
