GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

5.3 Aftermarket Head ?

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Old Mar 6, 2008 | 03:17 PM
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Default 5.3 Aftermarket Head ?

Are the larger intake valves most ported heads come with a problem with the 5.3's smaller bore? What is the largest intake valve you can use without problems with valve shrouding or the valve hitting the block?
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Old Mar 6, 2008 | 04:01 PM
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2.02 intake valves can be used in a 5.3
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Old Mar 6, 2008 | 04:12 PM
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I have 2.04 and a 1.575 in my heads!
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