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2.02 243's on 5.3?

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Old 07-29-2010, 02:28 PM
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Default 2.02 243's on 5.3?

Hi guys, I posted this in the truck section but had no responses. I just got my Patriot 243 heads today with 2.02/1.57 and need to know if they'll work on my 5.3. Has anyone tried this?
Old 07-29-2010, 05:09 PM
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They will work on the 5.3l with no problems. Late model 5.3 motors come with 243/799 casting heads on them.
Old 07-29-2010, 05:19 PM
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No problems with the bigger valves, either?
Old 07-29-2010, 05:33 PM
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No problems as long you aren't running a humungous cam. Many guys have run 5.3l heads with the same size valves with no issues.
Old 07-29-2010, 06:42 PM
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OK, running a .551 lift cam at 1.7 but I'm running 1.8 rockers. I think the total lift should be around .582 or so, nothing crazy. Thanks for the input!




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