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LQ9 heads on a 5.3L

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Old 10-04-2005, 10:12 PM
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Default LQ9 heads on a 5.3L
I have been told that the Lq9 heads #317 will bolt right on my 5.3l. If so is there anything else that is needed for the swap, or does anyone have any usefull information for the for the swap? Any and all information would help.
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Old 10-05-2005, 09:38 AM
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????????
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Old 10-05-2005, 09:40 AM
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should bolt up but i think that the chambers are bigger on the 6.oL your compression will be lower in case you didnt know
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Old 10-05-2005, 10:58 AM
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Yea i want my compression to drop so i can run more boost safely. anyone know what kind of horespower gains i might see with just the heads.
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Old 10-05-2005, 12:02 PM
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also will i have to get a diffrent intake for those heads??
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Old 10-05-2005, 12:55 PM
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I know you don't need a different intake on a fbody when going to these heads.
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Old 10-05-2005, 01:20 PM
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Chambers will be too large, valves will be shrouded.
Dished pistons is the way to go, with ported 5.3 heads and bowl cleaning to reduce a few CCs.
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Old 10-05-2005, 03:02 PM
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what do you mean that valves will be shrouded? Sorry i am kinda new to this stuff and am trying to gain all the knowledge i can.
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Old 10-05-2005, 04:05 PM
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oh yea he's right about the valves. forgot about that
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Old 10-05-2005, 07:40 PM
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[QUOTE=peppersac]what do you mean that valves will be shrouded? QUOTE]


?????
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Old 10-06-2005, 09:00 AM
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When the valves come down, the cylinder walls will be close, reducing the flow capabilities of he valve. (intake)
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