LQ9 heads on a 5.3L

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Oct 4, 2005 | 10:12 PM

peppersac

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From: oklahoma city

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.

Oct 5, 2005 | 09:38 AM

peppersac

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????????

Oct 5, 2005 | 09:40 AM

SUTTERERMAN85

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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

Oct 5, 2005 | 10:58 AM

peppersac

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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.

Oct 5, 2005 | 12:02 PM

peppersac

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also will i have to get a diffrent intake for those heads??

Oct 5, 2005 | 12:55 PM

99 Pewter TA

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I know you don't need a different intake on a fbody when going to these heads.

Oct 5, 2005 | 01:20 PM

PREDATOR-Z

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From: BFE

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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Oct 5, 2005 | 04:05 PM

SUTTERERMAN85

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oh yea he's right about the valves. forgot about that

Oct 5, 2005 | 07:40 PM

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peppersac

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[QUOTE=peppersac]what do you mean that valves will be shrouded? QUOTE]

?????

Oct 6, 2005 | 09:00 AM

#11

PREDATOR-Z

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From: BFE

When the valves come down, the cylinder walls will be close, reducing the flow capabilities of he valve. (intake)

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LQ9 heads on a 5.3L

LQ9 heads on a 5.3L

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