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Head bolts pattern 2005+ 5.3

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Old 03-02-2010, 05:33 PM
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Default Head bolts pattern 2005+ 5.3

Anyone have a order to torque them down? is it the same as a ls1?
Old 03-02-2010, 05:36 PM
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Same as the LS1
Old 03-02-2010, 05:47 PM
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okay another question. i have a felpro set of head bolt PN#es7220 for a 2004-2006 4.8,5.3,6.0. They are 10 long bolts all same size 5 short for the top of the head. Then i have a gm kit for a 2000 ls1 GM part number #12498545 It is 8 long 2 that are alittle shorter and 5 short for the top. I take it that 5.3 and 5.7 do not use the same head bolt. and the felpro kit is the correct kit right?
Old 03-02-2010, 06:12 PM
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There is a 1st and 2nd design. 2004 is the first year for the new design.
Old 03-03-2010, 02:29 AM
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yep just found that out. i am the 1st design with 3 diffrent lenght bolts



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