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What are good heads for a 5.3 .

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Old 12-21-2014, 06:13 PM
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Default What are good heads for a 5.3 .
I'm shooting for the 12s in my 08 silverado 4 door the cam is 231/236 .617 .601 112+2 going with a 4000k stall an 411. The truck has 243 right now I was thinking of jus porting them? What do y'all think?
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Old 12-21-2014, 06:25 PM
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Trick flows
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Old 12-21-2014, 09:03 PM
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Porting them wouldn't be a bad Idea and would be a good way to get a little extra flow on the top end.
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Old 12-21-2014, 10:43 PM
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Those are about as good as it gets for factory casting. A really good port and polish will make a significant difference.
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Old 12-22-2014, 05:59 PM
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Guess I'll be porting them. Thanks guys
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Old 12-22-2014, 06:12 PM
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proheads has a sub 900$ exchange for 5.3 heads.
stage 2 cnc port and big valves.
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